Which of the following statements is true about niches?
I. New species can outcompete native species to fill a niche.
II. Extinction or emigration of a species can leave a niche vacant.
III. Some species occupy niches that no other species can fill.

Answers

Answer 1

Answer:

0

Explanation:


Related Questions

Please answer correctly. I really need this. Its not a joke.
Thank you
1. What conditions might cause the most water and sediment to be collected at the bottom of the stream table?

Answers

Answer: Steep, high velocity, no silting. The high water speed picks up silt from the bottom instead of letting it settle to the bottom. When the land gets level like often happens at the mouth of rivers where the water spreads out and slows down, silt settles to the bottom and you could get a wide, shallow delta.

(Put in own words this is from online hope it helps)

Why might a speaker choose NOT to use contractions in a formal speech?

A. Contractions are too short.

B. Contractions are rude.

C. Contractions are informal.

D. Contractions are improper.

Answers

Answer:

The answer is C

Explanation:

I just took the quiz :)

A speaker might choose not to use contractions in a formal speech because contractions are informal. Thus, the correct option is C.

What is a Formal speech?

A formal speech may be defined as a form of speech that is utilized in authorized and official workplaces. It does not illustrate personal background.

Contraction involves the feelings of pressure, stress, or shrinkage of actions. Thus, all such properties come under an informal type of speech where the personal background is determined.

Therefore, a speaker might choose not to use contractions in a formal speech because contractions are informal. Thus, the correct option is C.

To learn more about Formal speech, refer to the link:

https://brainly.com/question/10545946

#SPJ5

Cardiac output is the amount of blood pumped by the heart in one minute. Which of these will increase cardiac output?

Answers

Answer: the factors that increase cardiac output include:

--> Nervous stimulation and

--> Hypertrophy of the heart.

Explanation:

Cardiac output can be defined as the quantity of blood pumped into the aorta each minute by the heart. This is also the quantity of blood that flows through the circulation. There are factors that can cause increased cardiac output or that can lead to a hypereffective heart. They are:

--> NERVOUS STIMULATION: The combination of sympathetic stimulation and parasympathetic inhibition does two things to increase the pumping effectiveness or cardiac output of the heart. These include:

• it greatly increase the heart rate from the normal level of 72 beats/mum up to 180 to 200 beats /mom.

• it increases the strength of heart contraction, which is called increased contractility to twice it's normal strength.

--> HYPERTROPHY OF THE HEART: A long term increased workload, but not so much excess load that it damages the heart, causes the heart muscle to increase in mass and contractile strength in the same way that heavy exercise causes skeletal muscles to hypertrophy. This effect of increased muscle mass of the heart, allows the heart to pump much greater than usual amounts of cardiac output.

I will give brainlies if you answer correctly and give an explanation!

Regular periods of overeating followed by self-induced vomiting are associated with which physiological disorder?
A. Anorexia
B. Bulimia
C. Obesity
D. Parkinson's

Answers

Answer:

B. Bulimia

Explanation:

See below for a description of each case:

Anorexia (also known as Anorexia nervosa) is an eating disorder characterized by abnormally low body weight. It's similar to the starving of oneself to achieve lower weight, but this is unhealthy. It's very common (more than 3 million cases per year in US) and is treatable. This can last for several months or years and is more common in females from ages 18–35.

Some symptoms include:

Extreme weight loss

Thin appearance  

Fatigue and insomnia  

Bluish discoloration of the fingers

Hair that thins, breaks or falls out  

Amenorrhea (absence of menstruation)  

Dry or yellowish skin  

Dehydration

Bulimia (also known as Bulimia nervosa) is an eating disorder characterized by binge eating, followed by methods to avoid weight gain (ie. vomiting). It's very common (more than 3 million cases per year in US) and is treatable.  It can last several years or be lifelong and are more common in females from ages 18–35.

Some symptoms include:

Binge eating

Forceful vomiting

Long-term fear of gaining weight  

Overuse of laxatives or diuretics

Use of supplements or herbs for weight loss

Excessive exercises

Stained teeth (from stomach acid)

Obesity is a condition characterized by abnormal or excessive fat accumulation. It's extremely common (more than 3 million cases per year in US) but is treatable. It can last several years or be lifelong. Family history may increase likelihood for some types.

Some symptoms include:

Above average body weight  

Sleep apnea- a condition in which breathing is irregular and periodically stops during sleep  

Skin problems caused by moisture that accumulates in the folds of your skin  

Osteoarthritis in weight-bearing joints, especially the knees

Parkinson's disease is a chronic and progressive movement disorder, meaning it weakens the control of movements of the body over time. It's fairly common (more than 200,000 cases per year in US). There are treatments to manage the condition but there is no known cure. This can last several years or be lifelong. It's more common in 60+ years old males.

Some symptoms include:

Tremors, trembling of hands, arms, legs, jaw and face

Stiffness of the arms, legs and trunk

Slowness of movement

Poor balance and coordination

Speech difficulty

Do you think new helpful species of bacteria will evolve with different functions? What would they do? What traits could they have to help them do these things?
please help

i will give brainliest and 5 * and 10 points for the best answer

i don't want to see any link as an answer

if i do you will be reported

Answers

My buddy is golf Wednesday night at the school and I’m going to go get a new car for a couple of hours to get my hair and then I’ll slap you ortepw and I don’t

In 2-3 sentences, explain how crossing over and independent assortment in sex cells affect the appearance of the fully developed organism.

Answers

Answer:

Explanation:

Crossing over and independent assortment in gametes (sex cells) can lead to genetic variation in the DNA of these gametes and lead to offspring looking different from their parents. Crossing over is the exchange of DNA between a pair of homologous chromsomes (the mom and the dad) which results in recombinant chromsomes that have new combinations of genes. Independent assortment refers to the lining up of chromsoomes along the metaphase plate in meiosis 1, and this can lead to different combinations of gametes.

Incinerating or burning trash is the best way to get rid of the majority of it. True or False

Answers

Answer:

Emissions from burning waste worsen environmental inequalities, create ... and municipal solid waste incinerators have sparked resistance in many places. ... Nonetheless, 72 incinerators are still operating today in the U.S. Most of ... Wastes that are not recycled or composted typically are either burned or ... So false

Explanation:

If a 25 kg car accelerates at a speed of 100m/s2,2 what will the force of the car be? Plug in the numbers: Force = mass x acceleration

Answers

Here is the answer:
Mass=25kg
Acceleration=100m/s^2
Force=mass*acceleration
Force=25*100
Force=2500N

Which of these molecules would form a single covalent bond?





Group of answer choices

Na3N


NaCl

KCl

Cl2

Answers

Answer: Cl2

Explanation:

Which chemical is classified as an enzyme?
a. galactose
b. lipid
c. protease
d. manganese dioxide

Answers

Answer:

C. protease

Explanation:

For each glucose that enters glycolysis, _____ acetyl CoA enter the citric acid cycle. For each glucose that enters glycolysis, _____ acetyl CoA enter the citric acid cycle. 4 1 5 0 2

Answers

Answer:

For each glucose that enters glycolysis,  2 acetyl CoA enter the citric acid cycle.

Explanation:

SYNTHESIS OF 2Acetyl CoA -:

The glucose is transformed into 2pyruvate (6 carbon molecules are converted into 2 -3 carbon molecules) during glycolysis. In both aerobic and anaerobic respiration, glycolysis occurs frequently. This process takes place in the cytoplasm (it does not require oxygen or mitochondria), but if both oxygen and mitochondria are present, two molecules of pyruvate join mitochondria and prepare for citric acid cycle.

Until entering this, the molecules go through a mechanism known as the linked (connects glycolysis with citric acid cycle) reaction, in which the pyruvate molecule is transformed into 2 acetyl CoA (meaning 3 carbon molecules are converted into 2 carbon molecules) and a carbon molecule is released in the form of [tex]2CO_2[/tex] (waste product).

2NAD+ and NADH are synthesized in the linked reaction, implying that reducing power is produced. It means that electrons from pyruvate are released in the form of hydrogen, which 2NAD+ accepts and reduces to form 2 NADH.          

[tex]Glucose[/tex] → [tex]2pyruvate[/tex] → [tex]2Acetyl CoA[/tex]

Linked reaction is also known as oxidative -dicarboxylation.

Hence,  2 Acetyl CoA is required to enter citric acid cycle.  

1 point
7.A tree has organs that carry out specific functions needed for survival.
What function do the tree's leaves carry out? *

A)act as reproductive structures

B)capture sunlight to make food

C)take in dissolved minerals

D)anchor the tree underneath the soil

Answers

Answer:

C sorry if im wrong

Explanation:

.

Vacuoles are cellular organelles that are found in all plant and fungal cells. In plant cells, vacuoles tend to store large amounts of water, so they can push outward on cell walls and help keep plants upright. In fungal cells, vacuoles often store materials that are toxic to the cell.

According to the above information, how do vacuoles help fungal cells maintain homeostasis?
A.
by storing large quantities of water
B.
by allowing the cells to get rid of waste
C.
by producing more cellular organelles
D.
by helping the cells extract energy from food

Answers

Answer:

D. by helping the cells extract energy from food

Explanation:

Fungi are decomposers so they normally need some sort of food to grow. To get the energy to grow, they extract it from the food. Fungi will get their energy from dead animals, dead plants, etc.

3. Which type(s) of cells have genetic material that is contained in a nucleus?

A. bacterial
B. plants only
C. animals only
D. both plant and animal cells

Answers

Answer:

D. Both plant and animal cells

Explanation:

The explanation is that animal and plant cells are eukaryotic cells which means they have a nucleus which contains and protects the genetic material. Bacteria is a prokaryotic cell which means it does have genetic material but doesn't have a nucleus.

Which of the following BEST describes the primary goal for meiosis:

Answers

Answer:

D) Daughter cells are produced with only half the chromosomes of the parent cell.

Explanation:

The primary goal of meiosis is to create four gametes, which are cells with only half the chromosomes of the parent cell

PLEASE HELP
I WILL GIVE YOU BRAINLIEST

Answers

Answer:

Most cells in our body have two versions of each chromosome (Body cells). These cells are called diploid. We grow and replace these cells with identical cells through a cell division called mitosis.

For sexual reproduction, we need to make cells that have only one version of each chromosome (sex cells). These cells are called haploid. These unique cells are made through a cell division called meiosis.  

Explanation:

haploid = 1

diploid= 2 // "di"=2

our body contains 46 chromosomes, half from our dad and a half from our mom. our repoductive contains 23 chromosomes.

What is one characteristic animal have in common with a mushroom?

Answers

Answer:  Animals and fungi share a common ancestor and branched away from plants at some point about 1.1 billion years ago.

plants and fungi both have cell walls.

Fungi are more like animals because they are heterotrophs, as opposed to autotrophs, like plants, that make their own food.

What types of light can plant cells absorb? Select 3 answers to get this correct.

Answers

It will be 1,2,4

You can’t see x-rays with machine

Is DNA replication always a foolproof process? Explain your answer.

Answers

Answer: No. Although many proteins check the DNA for damage or errors, damaged regions can still be replicated. This may result in gene alterations and serious complications for the organism.

Explanation:

No, replication is not always a foolproof process although many proteins look for DNA damage or mistakes, damaged areas can still replicate. This can lead to gene rearrangements and serious problems in the body.

Some mutations are caused by mistakes in DNA replication. DNA replication isn’t always 100% complete. Sometimes, an incorrect base is inserted into the new DNA strand. This incorrect base can become permanent.

Breaks in DNA are caused by DNA replication errors, particularly those in regions that are difficult to replicate, known as fragile sites.

Breaks in DNA can cause cancer, mainly because they increase the risk of chromosome fragments rearranging themselves and activating genes that cause uncontrolled cell division.

To learn more about the replication, refer to the link:

https://brainly.com/question/31456037

#SPJ6

at what condition a new queen bee is produced in a hive​

Answers

Three main conditions - when the colony wants to swarm, when the colony wants to supersede its queen, and when its queen has died.

The air outside is so warm that this snowman is melting. During melting, the water molecules (gain/lose) thermal energy. How does the motion of the molecules change during melting?

Answers

Answer:

they gain thermal energy because they are warming up. the molecules are speeding up because liquid molecules are faster the solid molecules which don't move much.

Explanation:

Inside a human stomach, hydrochloric acid is important in digestion. Which reason best explains why the enzymes found in other parts
of the body would not function well in the stomach?
a. The temperature is too high
b. There is not enough water
C. The pH is too acidic
d. There are not enough substrates

Answers

Answer:

C. The pH is too acidic

Explanation:

Many acids and bases in living things are secreted to provide the proper pH for enzymes to work properly. Enzymes are biological catalysts, such as pepsin, which is needed to digest protein in the stomach and requires an acidic environment.

How could you use the treated wastewater to recharge the aquifer?

Answers

Answer:

QUESTION:

How could you use the treated wastewater to recharge the aquifer?

ANSWER:

Treated wastewater could be used to recharge the local aquifer by discharging the treated water into an area with permeable sediments that overlies the aquifer. The treated wastewater would flow through the permeable sediments and into the aquifer, from which it could be pumped again for use in homes and businesses.

Explanation:

I hope that this helps you out! :)    

Have a great rest of your day/night!    

Please thank me on my profile if this answer has helped you out.

Describe the added “costs” of sexual reproduction for an organism.

Answers

O_o

huh

-_0

Photosynthesis???????

Match the following terms with the correct definition. Arterioles Arteries Capillaries Venules Veins Small vessels that carry blood away from the heart to the capillaries are __________. Muscular-walled vessels that carry blood away from the heart are _______. One-cell-thick microscopic vessels that function to exchange nutrients and wastes are _________. Small vessels that connect to the capillaries that carry blood back to the heart are ________. Vessels that carry blood back to the heart are _________.

Answers

Answer:

Small vessels that carry blood away from the heart to the capillaries are Arterioles. Muscular-walled vessels that carry blood away from the heart are Arteries. One-cell-thick microscopic vessels that function to exchange nutrients and wastes are Capillaries. Small vessels that connect to the capillaries that carry blood back to the heart are Venules. Vessels that carry blood back to the heart are Veins.

Explanation:

We have different types of vessels in our bodies. We can divide them by their size and structure. Starting from the ones that carry blood away from the heath, we have the arteries. Arteries are vessels of big diameter that have muscle around them. Then, the arteries branch into arterioles, which have a smaller diameter. The arterioles branch into capillaries. These are small vessels with thin walls that allow the exchange of nutrients, wastes, and gases with the neighboring tissues. Once that the blood flows through the capillaries, it goes to the venules, which are small veins that will carry the blood to the veins and these to the heart. The veins do not have muscles in their structures, and their walls are thinner than the ones in the arteries.

Over 400 years ago, the bark of the cinchona tree was discovered to contain a chemical compound called quinine. Quinine was, and still is, used to cure and prevent malaria. This is an early example of ____________________.

a. biotechnology

b. scientific modeling

c. genetic engineering

d. genomics

Answers

Answer:

A.

Explanation:

I need help please :(

Answers

Answer:

D. Cellular respiration is a process that producess glucose

Explanation:

Glucose is a reactant used in cellular respiration and NOT a product of it. Cellular respiration burns glucose and turns into ATP (energy)

who is the current preme minister of America​

Answers

Mr. Joe Biden

Mr. Joe Biden is the current president of the USA.

Joe Biden my bro hope it helps

What fictional planet does the writer compare Kepler-16b to?
Pluto
Lyra
Tatooine
Cygnus

Answers

Answer:

Tatooine

Hope this helps!

Why are Wind Turbines being moved offshore?

Answers

Answer:

Wind turbines are being moved offshore because the wind comes at the right time: Offshore winds are usually higher throughout the day, allowing for more reliable and productive electricity output when market demand is highest. The majority of land-based wind resources are more efficient at night when demand for electricity is smaller.

Other Questions
Two reasons Why learners perform well in grade 12 and are still not accepted into Universities If Saturn were to magically explode one day, how long would it take us on Earth to see it? Help ASAP! Overdue (Volume) this easy can i get helppppppppppppp the base of the cylinder? Use 3.14 for n and round the answerto the nearest hundredth.h-13 inr =in. (1 point) Solve the following inequality, giving your answer in interval notation.1 - x > 2 What statement best describes a trapezoid? *1 pointa. All sides are equal and opposite sides are parallelb. Exactly one pair of parallel linesc. Has 2 sets of parallel lines and four 90 degree anglesd. Has 2 equal sides and 3 acute angles is the cell membrane organelle, cell tissue, organ, organ system organismis How do we write a book report exactly? What is the structure supposed to look like? 20 DAYS left til my sweet 16 bixchessss Which of the following is an accepted health benefit of soy?A. Stronger bonesB. Reduced risk of cancerC. Enhanced attention spanD. Lower rates of heart disease please do it right quickly please hurry hurry!!! do it right or ill report Which of the following is a theme in the video "Hair Love"? Select which of the following is a major disadvantage of using nuclear power to generate electricity.The power plants are inexpensive to buildA small amount of power is producedNo greenhouse gases are producedThe by-product of nuclear power is radiation What adaptation helps the pine tree reduce water loss?leavesthornsSeeds in conesWoody stems When you use the Insert Sheet Rows command, the Insert dialog box lets you specify where the new column is to be located.Please select the best answer from the choices providedTF WILL MARK BRAINLIEST PLEASE HELPRead the excerpt from Joseph Chamberlains speech "I Believe in a British Empire.I cannot look forward without dread to handing over the security and existence of this great Empire to the hands of those who have made common cause with its enemies, who have charged their own countrymen with methods of barbarism, and who apparently have been untouched by that pervading sentiment which I found everywhere where the British flag floats, and which has done so much in recent years to draw us together. I should not require to go to South Africa in order to be convinced that this feeling has obtained deep hold on the minds and hearts of our children beyond the seas. It has had a hard life of it, this feeling of Imperial patriotism. It was checked for a generation by the apathy and the indifference which were the characteristics of our former relations with our Colonies, but it was never extinguished. The embers were still alight, and when in the late war this old country of ours showed that it was still possessed by the spirit of our ancestors, and that it was still prepared to count no sacrifice that was necessary in order to maintain the honor and the interests of the Empire, then you found a response from your children across the seas that astonished the whole world by a proof, an undeniable proof, of affection and regard.What is the authors claim in this passage?It is time for Englands colonies to attain freedom.Imperial patriotism is no longer felt in the colonies.It is a mistake to allow a colony to become independent.England has sacrificed subjects lives for its interests. 60 x 5?help plzzzzzzzzzzzzzzzz The revenue from a companys factory in Scranton, PA is given by 2n2-15n+23, where n represents the number of paper goods produced in the factory. The cost in dollars of producing paper goods is given by n2+3n+23. Write and simplify a polynomial expression for the profit from making and selling n paper goods. Please anyone help me ASAP with this essay for English. Steam Workshop Downloader