The most diverse and prevalent organisms on earth are

Answers

Answer 1

Answer:bacteria

Explanation:

Answer 2
The answer is Bacteria

Related Questions

Is Natural law theory is inconsistent with a theory of human rights. True / False

Answers

Answer:

i think that it's false.

Explanation:

Natural law is a theory in ethics and philosophy that says that human beings possess intrinsic values that govern our reasoning and behaviour. Natural law maintains that these rules of right and wrong are inherent in people and are not created by society or court judges.

The Interests Theory Approach. Advocates of the interests theory approach argue that the principal function of human rights is to protect and promote certain essential human interests. Securing human beings' essential interests is the principal ground upon which human rights may be morally justified.

g 1 molecule of glucose is catabolized to pyruvate and then acetyl-coA. All the acetyl-coA enters the citric acid cycle. How many molecules of NADH are produced from the citric acid cycle only (do not include NADH from glycolysis or the pyruvate dehydrogenase complex in your calculation.) You must answer as a number i.e if you think the answer is 12, you must enter 12, not twelve.

Answers

Answer:

6NADH

Explanation:

In the kreb's cycle NAD is  reduced during the reduction of 6-carbon citrate to 5 carbon Alpha-Ketoglularate.

The second is produced during the conversion of 5carbon alpha ketoglutarate to succinate. Lastly in  the conversion of fumirate  to oxoloacetate;another NADH  is formed.

However, since two pyruvate enters the Kreb's cycle therefore 6NADH(three NADH per cycle of Citric)  are produced for each molecule of glucose that is broken down from glycolysis.

Remember,each glucose molecule goes through 2 cycles of Kreb.

Futhermore co-enzyme FADH2 are also produced,with 2 molecules per 1 glucose.

These Co-ezymes transfer hydrogen ions,into the matrix of the mitochondria,where is is splits to protons and  electrons.

The electrons formed the ETC,which produce PMF  for transporting protons into the intramembranes for electrochemical gradients needed to generate energy for ATP s synthesis,by ATP synthase.

.

Mutations in region B and region D give the same results - when either of these regions is mutated, the operon is expressed under all conditions (called constitutive expression). You hypothesize that region B is the operator region and that Region D is the repressor protein. To test your hypothesis, you create two partial diploid lines by introducing a F' plasmid with a wild-type lac operon: Strain 1: F' A B C D E / A B- C D E Strain 2: F' A B C D E / A B C D- E What experimental results would be predicted by your hypothesis

Answers

Answer:

As it is given in the question that region D is the repressor protein and operator region is region B  then the The repressor region D form a protein that will bind to the operator region B and leads to inhibition of the transcription. So, the repressor protein will not repressed a mutant operator and the lac gene will express itself constitutively.

Strain 1:  F' A B C D E / A B- C D E

In this strain the mutant opertor gene is present so, it will not repressed by F' as it will not be able to bind. Hence, the lac gene expression is constitutive.

Strain 2:  F' A B C D E / A B C D- E

In this strain there is two protein produced by the F' plasmid mutated repressor protein, and a non-mutated repressor protein. As we know mutated repressor will not bind to operator gene and still expression will take place but here  a extra not mutated non-mutated protein is present and the repressor protein from F' will bind to the operator region B and thus repress the expression of gene in it.

Select the correct answer.
Which statement best compares the role of meiosis in a unicellular and a multicellular organisms?
OA.
Meiosis is the mechanism used for producing somatic cells in unicellular as well as multicellular
OB.
Meiosis is the mechanism used for producing gametes in unicellular organisms and somatic cells
O c.
Meiosis is the mechanism used for producing gametes in multicellular organisms whereas it doe
unicellular organisms.
Reset
Next​

Answers

Answer:

Meiosis is the mechanism used for producing gametes in multicellular organisms whereas it does

unicellular organisms.

Explanation:

Meiosis is a kind of cell division used mainly by sexually-reproducing organisms, whether unicellular or multicellular, to produce gametes i.e. meiosis only occurs during gamete formation.

In sexual reproduction, gametes must fuse in a process called fertilization. This gametes, however, must each possess half of the chromosome number of the individual organism. Meiosis is the process that ensures that the chromosome number of the gametes is reduced by half i.e. diploid (2n) to haploid (n).

Therefore, meiosis is the process of gamete formation in sexually-reproducing unicellular or multicellular organisms.

Which of the following is a human-related release of greenhouse gases?
O A. Wild animal respiration
OB. Volcanic eruptions
O C. Intensive agriculture
O D. Solar cycles
It’s A

Answers

Answer:

C

Explanation:

I'm pretty sure it's actually C and not A. It's asking for human-related release from greenhouse gases. Humans don't cause volcanic eruptions and aren't in control of wildlife's respirations. The solar cycles has to do with the magnetic flux that rises to the surface of the sun and lasts 11 years. Intensive agriculture increases pollution which harms the environment.

I neeed help pls answe them plssss

Answers

Answer:

Autosomal dominant and recessive: Autosomal dominant states a pattern of inheritance in which an individual carries one normal gene and one copy of a mutant gene while autosomal recessive states a pattern of inheritance in which an individual have two copies of the mutant gene.

Incomplete dominance:  Incomplete dominance states a heterozygous condition in which both the alleles present are partially expressed and produces intermediate phenotype.

Codominance: In codominance and individuals receive alleles, if both the alleles are different including dominant and recessive, dominant allele will be expressed while recessive will be masked.

Multiple alleles: organisms with multiple alleles exist with two copies of every gene present in a population with variation in genes.

Sex linked gene: In humans and some other organisms, sex linked genes are influenced by genes on the X chromosome. for example: If a gene is present on the X chromosome only and not the Y chromosome.

How can changes on earths surface affect changes below surface

Answers

Answer:

There are several changes that occur on the earth's surface but also affects the changes below the surface, some of them are as follows:

When rainfall occur on the sandy surface on earth, it looses the soil under the surface and can cause landslides.Imbalance in the food chain above or on the earth surface can affect the nutrient quantity below the surface that is essential for soil bacteria and other microorganisms.Deforestation can also loosen the soil and soil under surface can shift its position.Use of chemicals on agriculture surface can lead to change the fertility of soil below the surface.

What type of transport occurs in the cell membrane when a person does sports and is consuming alcohol?

Answers

Cellular transport: it is the exchange of substances through the plasma membrane, which is a semipermeable membrane. Transport routes are through the cell membrane

It allows the metabolism waste to be expelled from its interior It allows the movement of substances that it synthesizes as hormones. Metabolic energy: is the way in which it acquires nutrients through processes of incorporation into the cell of nutrients dissolved in water.

Therefore, when the person consumes alcohol in excess the ce transport is part of the disincorporation of toxic waste, while when the person does sports, and is supposed to have a balanced diet, the cellular transport uses it for his metabolic energy.

Polaris is ______. (choose the three correct answers). called the north star. no choices fit this sentence always directly over the north pole. a star that is often the brightest start in Ursa Minor.

Answers

Answer:

called the north star, always directly over the north pole and a star that is often the brightest start in Ursa minor..

Explanation:

Polaris commonly the North Star or Pole Star and is the brightest star in the constellation of Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star.

hope this answer correct (^^) ....

Assume a population of deer has a crude birth rate of 36 per 1,000/yr, a crude death rate of 20 per 1,000/yr, an immigration rate of 15 per 1,000/yr, and an emigration rate of 8 per 1,000/yr. What is the population growth rate

Answers

Answer:

0.023%

Explanation:

The Population growth rate is a change in population with time taken into consideration. It can be expressed with the formula

[tex]N/t[/tex] where N is the total change in the population size, and t is time.

When immigration and emigration are factored in, we now have the formula;

[tex](CBR +I) - (CDR + I)/1000[/tex]

[tex]= (36 + 15) - (20 + 8) = 51 - 28= 23\\\\expressing as a percentage of the population gives us,\\\\23/1000=0.023%\\\\[/tex]

In pea plants, purple flower color, C, is dominant to white flower color, c. The table shows the frequencies of the dominant and recessive alleles in three generations of peas in a garden. Allele Frequency for Flower Color in Peas Generation p q 1 0.60 0.40 2 0.64 0.36 3 0.75 0.25 4 0.80 0.20 Which generation showed the greatest frequency of having one of each allele? generation 1 generation 2 generation 3 generation 4

Answers

Answer:

generation 1

Explanation:

The allele frequency is a term that represents the frequency that an allele can appear in a given population. This term can help to develop conclusions about the genetic diversity that a region presents in relation to the individuals that compose it.

In relation to the question above, generation 1 had the highest frequency of having one of each allele. This is because this generation presents the maximum frequency of the dominant and recessive alleles in a coherent way, 0.60 and 0.40. However, the other generations showed a steady and progressive decrease in the recessive allele.

Answer:

Gen 1 or A

Explanation:

Please give me brainliest I need l  need to level up.

Match the following.

____________ Auditory area.
____________Primary somatosensory cortex.
____________Primary (somatic) motor cortex.
____________Motor speech (Broca's) area.
____________Premotor cortex.
____________Visual area.
____________Gustatory (taste) area.
____________Seat of intelligence, abstract


a. Frontal lobe
b. Parietal lobe
c. Insula
d. Occipital lobe
e. Temporal lobe

Answers

Answer: Please see the explanation column for answers

Explanation: Matching the following, we have

Auditory area------ Temporal lobe

Primary somatosensory cortex-----Parietal lobe

Primary (somatic) motor cortex.------Frontal lobe

Motor speech (Broca's) area-------Frontal lobe

Premotor cortex.------Frontal lobe

Visual area--------Occipital lobe

Gustatory (taste) area------Insula

Seat of intelligence, abstract------Frontal lobe

Read the following scenarios and indicate which of the following processes they describe.

1. Sodium ions (Na ) move through sodium channels in a synthetic membrane.
2. Sodium molecules move randomly around a solution of sodium chloride in water, frequently colliding with other sodium ions and chloride ions.
3. Water molecules move into the cytosol of a cell placed in a hypotonic solution.
4. Water molecules move into the cytosol of a cell placed in pure water.
5. The action of sodium-potassium pumps moves sodium ions (Na ) out of a cell and potassium ions (K ) into a cell. The action of sodium-potassium pumps moves sodium ions (Na ) out of a cell and potassium ions (K ) into a cell. The action of sodium-potassium pumps moves sodium ions (Na ) out of a cell and potassium ions (K ) into a cell.
6. Glucose molecules move into cells lining the intestine against their concentration gradient driven by the movement of sodium ions (Na ) into the cells down their concentration gradient.

Answers

1.facilitated diffusion

2.diffusion

3.osmosis

4.osmosis

5.active transport

6.cotransport

botanical name for fals yam​

Answers

Answer:

Icacina senegalensis.

Hope it helps you:)

Answer:

[tex]\boxed{\mathrm{Icacina \:\: oliviformis}}[/tex]

Explanation:

False yam is a root crop found in the Northern part of Ghana.

The botanical name for False yam is Icacina oliviformis.

Why do organisms go through the process of meiosis?

Answers

Answer:

Meiosis is essential for sexual reproduction and therefore occurs in all eukaryotes (including single-celled organisms) that reproduce sexually. ... These resultant haploid cells can fuse with other haploid cells of the opposite sex or mating type during fertilization to create a new diploid cell, or zygote.

Explanation:

What is the end result of the eukaryoic cell cycle?
A. no parent cells and two daughter cells
B. one parent cel and two daughter cells
C. two parent cells and one daughter cel
D. one parent cell and one daughter cell

Answers

Answer:

A. No parent Cells and two daughter cells

the answer will be A.

Phytoplankton, shown on the left in the image below, are microscopic organisms that can be found in freshwater and salt water environments. They perform photosynthesis to get energy and act as an important food source for larger organisms, such as the whale that is shown on the right. Phytoplankton A large whale. Which characteristic describes the whale but not its food source, the phytoplankton? The whale is heterotrophic. The whale has cell walls. The whale is unicellular. The whale is a prokaryote.

Answers

Answer:

The whale is heterotrophic.

Explanation:

Energy is needed by organisms to perform their life functions. Organisms, in nature, feed on one another for energy source. Some organisms are, however, capable of synthesizing their own food or energy source via a process called photosynthesis. This is the case of the phytoplankton in the question. These organisms are, therefore, called AUTOTROPHIC ORGANISMS or PRODUCERS.

On the other hand, some organisms are incapable of this self-production of energy source. Hence, they rely on other organisms for it. These category of organisms are called HETEROTROPHIC organisms, which is the category the large whale fall into due to its dependence on phytoplankton for energy source.

explain test for reducing sugar

Answers

Answer:

A food sample is dissolved in boiling water.

Explanation:

A small amount of Benedict's reagent is added and the solution begins to cool. In the next 10 minutes, the solution changes colour. if it turns blue, there is no glucose present in it.

As it is heated, it turns yellow. The hotter the colour of the reagent, the higher the concentration of reducing sugar. E.T.C.

There is more,e.t.c.

Hope this few helps.

) Recall what you know about crossing over, independent assortment, and random joining of sex cells during sexual reproduction.

Answers

Answer:

Crossing over is the process of interchange of genetic information among non-sister chromatids of homologous chromosome pairs during meiosis (specifically during synapsis in prophase I). During this process, the synaptonemal complex enables the interchange of chromosome fragments between non-sister chromatids through crossing over. Moreover, in sexual reproduction, the zygote diploid cell can be generated by the random joining of fully differentiated haploid gametic cells (male and female gametes). The combination of random joining with the phenomenon of crossing over is known to considerably increase the genetic variation of the resulting offspring. After zygote formation, the successive cycles of cell divisions during embryonic development will develop an organism that during its adult stage will reproduce via sexual reproduction.

Help can you pls number 2 to 4​

Answers

Answer:

Hey there!

1. Load

2. Broom

3. Flagpole

Hope this helps :)

help asap giving branlist :D

Answers

Answer:

the arrow between the kit fox and a coyote.the arrow between the grasshopper mouse and the red-tailed hawk.the arrow between the grasshopper mouse and the rattlesnake.the arrow between the grasshopper mouse and the coyote.the arrow between the rattlesnake and a red-tailed hawk.

Explanation:

All of the options show matter moving from secondary consumers to tertiary consumers.

Hope it helps.

PLEASE HELP ME ASAP BECAUSE IT IS DIFFICULT TO UNDERSTAND. Explain it for me.

Answers

Answer:

C.

Explanation:

For mRNA strands, there are four letters used in their code. A (adenine), U (Uracil), G (guanine), and C (cytosine.)

For RNA, it is the same, but the Uracil is replaced with Thymine (T).

A always pairs with U.

G always pairs with C.

YOUR QUESTION:

The scientist's strand code is has to convert the Thymine to Uracil since it is RNA instead of mRNA.

Hopefully this somewhat helped :)

What can a person do to limit exposure to X-rays?
wear sunblock
avoid cigarette smoke
wear a protective vest avoid chemicals

Answers

Wear a protective vest

X-rays are a form of indirectly ionizing radiation, and it can be really nocive to the humans health, so limiting the exposure is always a priority.

Here the correct option is wearing a protective vest.

-------------------------------------

X-rays are a form of radiation that is indirectly ionizing. Remember that ionization is what causes damage to our cells, so is better to avoid exposures to these types of radiation.

Now, X-rays are strong enough that they can penetrate a lot of common materials (like wood, plastic, etc.) And once it enters in your body, the chain of reactions that starts can't be stoped by external means.

So what you need to do is limit the exposure as much as you can. Ideally, you shouldn't be near a source of X-rays, but if there is no other option, you should use protection against radiation.

It comes in different forms depending on what the application is, for example, there are led screens that you can use to put between you and the source, and these will reduce drastically the fluence (flux of photons) that gets to you.

Similarly, there are protective vests also made in part of led or other high atomic number materials, that absorb the photons and protect you.

So here the correct option is to wear a protective vest, from the given options, is the only one that will protect you from the X-rays.

If you want to learn more, you can read:

https://brainly.com/question/13561128

What type of molecule is represented by the model below? A molecule made up of four carbon rings with other atoms bonded to those rings. Fat Carbohydrate Steroid Protein Points earned on this question: 0

Answers

Answer:

Steroid

Explanation:

Steroids are molecules that usually have 17 carbon atoms distributed in four rings of carbon bonded together and linked to atoms of other elements, as shown in the aciam figure. Steroids are molecules soluble in fat and are produced synthetically for therapeutic and even aesthetic purposes, however their use must be monitored by a responsible professional.

Answer:

STEROID

Explanation:

Steroids are molecules that usually have 17 carbon atoms distributed in four rings of carbon bonded together and linked to atoms of other elements, as shown in the aciam figure. Steroids are molecules soluble in fat and are produced synthetically for therapeutic and even aesthetic purposes, however their use must be monitored by a responsible professional.

16. Figure it shows the digestive system
С
D​

Answers

Answer:

Is there any picture or diagram to go with this question?

Name the components that gets digested in stomach and pancreas.

Answers

Explanation:

example protein can be digested both in stomach and pancreas

Protein can be digested in the stomach and pancreas because both secretes proteases (enzymes to digest proteins). The stomach secretes pepsin which works optimally under acidic conditions. The pancreas secretes trypsin which works optimally in neutral conditions

Drag each tile to the correct box. Arrange the stages of the frog’s life cycle from first to last. ↓ ↓ ↓ ↓

Answers

You didn't put the answer options, but the frog life cycle phases are:

Mating: In this phase two adult frogs, a male and a female, mate in the water or on plates. At this point, the male frog wraps his arms around the female and overlaps over her back. Spawning: At this point, the female releases the eggs into the water, ready to be fertilized by the males. Fertilization occurs outside the female's body. Eggs: Some fertilized eggs will be devoured by small animals, but those that survive will hatch 7-9 days after fertilization, releasing a frog shape, called a tadpole.Tadpole: It is similar to a fish and is formed by tail, mouth and gills. After 7 days of life, you will be able to swim and feed on algae. Four weeks later he will develop teeth and skin. When he reaches 9 weeks he will begin to change his shape, growing in size and developing head and legs. At that moment it will look more like a frog, but it still has a long tail. Metamorphosis of the fish: Up to twelve weeks of age it will reach the shape of a frog and start to feed on insects. Gradually it will lose its tail and its tongue will grow. The 16 weeks will become an adult frog, being able to mate and restart the cycle.

Answer:

The answer is below mark brainlyist

Explanation:

People can breed cats for specific traits such as coat color through the process of _____. a. natural selection b. descent with modification c. selection with modification d. artificial selection

Answers

Answer:

D. Artificial Selection.

Explanation:

Normal people can't breed cats by modifying their DNA, so options b and c are eliminated. Breeding cats for specific traits is not natural, so it is not choice a, either. Instead, selective breeding is d. artificial selection.

Hope this helps!

Answer:

D. Artificial Selection.

what kingdom does fish belongs to? ​

Answers

Answer:

animalia

Explanation:

Which of the following best describes the flow of energy in the Everglades food web shown below? (4 points) Diagram for an everglades food web. The food web contains the following organisms: American alligator, egret, raccoon, carp, Key deer, insects, Southern leopard frog, mangrove, and sawgrass. Mangrove is at the bottom of the food web, with arrows pointing to Key deer and insects. Sawgrass is also at the bottom of the web, with an arrow pointing to insects. Key deer, insects and Southern leopard frog are on the next level up. The Key deer has an arrow pointing to American alligator. The insects point to egret, carp, and Southern leopard frog. The Southern leopard frog points to the American alligator and the raccoon. The egret, carp and raccoon all points upward toward the American alligator. The carp also points to the egret. The American alligator is at the top of the food web. Mangrove → insects → carp → American alligator; about 90 percent of the energy in one trophic level is transferred to the next trophic level. Sawgrass → insects → Southern leopard frog → raccoon → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level. American alligator → carp → insects → mangrove; about 10 percent of the energy in one trophic level is transferred to the next trophic level. Egret → insects → mangrove → key deer → American alligator; about 90 percent of the energy in one trophic level is transferred to the next trophic level.

Answers

Answer:

Although there is no diagrammatic representation of the food web but the question can be answered based on the provided information. The answer is:

Sawgrass → insects → Southern leopard frog → raccoon → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level.

Explanation:

Food web is an interconnected food chain i.e. a series of food chains clustered together. A food web represents the various ways one organism can feed on another in a cycle. Since a food web consists of many food chains, energy is transferred when one organism feeds on another (flow of energy).

Just like a food chain, a food web begins with a PRODUCER, which is an organism capable of producing its own food via photosynthesis. This is the case of mangrove and sawgrass in this depicted food web as they are both producers and hence, must start the food web i.e. be at the bottom of the food web. Organisms called CONSUMERS feed on producers and one another to obtain energy. Consumers can be primary, secondary or tertiary depending on the organism they feed on. Primary consumers feed directly on producers, secondary consumer on primary and tertiary consumers on secondary, in that order.

This accounts for why the American Alligator is at the top of the food web because it is a tertiary consumer.

However, as organisms feed on one another, only about 10% of the available energy is transferred because most of the energy (about 90%) has been used for metabolic processes and hence, lost as heat.

Therefore, the best description for the flow of energy in the Everglades food web is:

Sawgrass → insects → Southern leopard frog → raccoon → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level.

Sawgrass is the producer and must begin the energy flow, followed by a primary consumer (insect). Feeding continues in that order until the tertiary consumer (American alligator) is reached.

Answer:

b) Mangrove → insects → Southern leopard frog → raccoon → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level.

Explanation:

took test on FLVS

Other Questions
Which of the following best describes the transfer of fecal coliform and an impact on the environment? Fecal coliform increases the growth of algae in surface water bodies, killing fish. Digestive problems in humans are elevated from the increase of fecal coliform into drinking water. Fecal coliform decreases the amount of dissolved oxygen and an overpopulation of fish in surface water bodies occurs. Fecal coliform increases the amount of organic substances in water and lowers the amount of dissolved oxygen, killing fish. What are the square roots of; (note: i think there are supposed to be 2 each) 36 12 1.96 0.64 400 25/36 Susan is a new sales rep who does not yet possess a great deal of product knowledge. She is often asked questions to which she does not know the answer. By being up-front with her customers about not knowing the answers, Susan builds trust because she is perceived as: Which of the following reagents should be used to convert to Question 2 options: A) Na, NH3 B) H2, Pt C) H2, Lindlar's catalyst D) HgSO4, H2O Abenfos has a rectangular field.it is 85m long and 25m wide. How long is the fence round the field? de los indgenas se deterior despus de que fueron convertidos en esclavos.A.La calidad de vida. La tasa de mortalidadC. La sobrepoblacinD. La tasa de natalidad determine the area and the circumference of the flat shape Area of a triangle is 1400 cm the base of the triangle is 5 times the height what is the height of the triangle I) Construct a triangle PQR such that |PQ|=8cm,{RPQ=90{PQR=30.Measure |RQ| PQRS is a parallelogram. Find the values of a and b. Solve for the value of c if c = a + b.A. 5B. 14C. 0D. 7 Triangle D E F is shown. Lines are drawn from each point to the opposite side and intersect at point G. Line segments D C, E B, and F A are formed and cut each side into 2 equal parts. In triangle DEF, DG = 10 cm. What is CG? 5 cm 10 cm 15 cm 20 cm How did the geographic location of Rome help grow the empire politically? Please answer this question now Race and gender are significant in American elections because they remain important sources of political disagreements and identity politics, which can influence individual voting behavior.A. TrueB. False Diamagnetic materialsA) have small negative values of magnetic susceptibility.B) are those in which the magnetic moments of all electrons in each atom cancel.C) experience a small induced magnetic moment when placed in an external magnetic field.D) exhibit the property of diamagnetism independently of temperature.E)are described by all If ABC~DEF and the scale factor from ABC to DEF is 3/4, what is the length of DF? The following selected amounts are reported on the year-end unadjusted trial balance report for a company that uses the percent of sales method to determine its bad debts expense. Accounts receivable$441,000Debit Allowance for Doubtful Accounts 1,310Debit Net Sales 2,160,000Credit All sales are made on credit. Based on past experience, the company estimates 1.0% of credit sales to be uncollectible. What adjusting entry should the company make at the end of the current year to record its estimated bad debts expense All of the following are employer payroll taxes except: Multiple Choice Social Security tax equal to that withheld from employees. Medicare tax equal to that withheld from employees. State unemployment tax. Federal unemployment tax. Federal income tax equal to that withheld from employees. Text: these two triangles are similarValues from left to right: 10, 12, 9What is the area of the shaded area Suppose that Rihanna sells 1,000 tickets to a concerts at $480 each. If the equilibrium price is $600 per ticket for a fixed supply of 1,000 tickets, what is the value of the additional economic rent that Rihanna could earn if she charged the market clearing price?