Dark skin (a result of increased melanin production in equatorial peoples) is likely a response to ultraviolet (UV) radiation, because UV radiation can cause Group of answer choices skin cancer. hypothermia. rickets. hypoxia.

Answers

Answer 1

Answer:

skin cancer

Explanation:

because a human skin system is not evolved to handle the harsh conditions invoked by ultraviolet rays


Related Questions

Differentiate between parenchyma collenchyma and sclerenchyma in tabular form

Answers

Explanation:

your is your answer can u follow me

A discrete, locally folded unit of protein tertiary structure usually having a specific function best describes __________. A discrete, locally folded unit of protein tertiary structure usually having a specific function best describes __________. a domain a motif a complex quaternary structure

Answers

Answer:

a domain

Explanation:

The domains are the basic units of the proteins, they are polypeptide segments (about 30 -200 amino acids) that have a defined tertiary structure and play specific biological functions including, for example, enzymatic and structural activities. Protein domains are evolutionary conserved, it means that these polypeptide segments can be found in phylogenetically related species and share sequence homology. Examples of protein domains include the zinc finger and the helix-turn-helix domains which are involved in protein-DNA interactions of transcription factors.

Blood is supplied to the myocardium by
A) the coronary sinus.
B) the coronary arteries.
C) arteries that branch off the subclavian arteries.
D) contact with blood in the pumping chambers.
E) arteries that branch from the pulmonary arteries.

Answers

Answer:

B) the coronary arteries

Answer:

B

Explanation:

the artery of coronary circulation which nourishing myocardium

A small number of birds arrive on an island from a neighboring larger island. This small population begins to adapt to the new food plants available on the island, and their beaks begin to change. About twice a year, one or two more birds from the neighboring island arrive. What effect do these new arrivals have

Answers

Answer:

The environmental variation

Explanation:

Environmental variation has a big role for their beaks to change in a size and shape , that means if the birds like the condition of the place specially birds like to eat cactus fruits that is the reason for their beak rapid change

Question
Q2. A student places peaches into a pure water solution
Give two differences you would expect to find in the water
after ino hours.

Answers

Answer:

The correct answer -  peaches will swell.

Explanation:

In the hypotonic solution, solution has a higher water potential than that of the cell of peach, so water will move from a region of higher water potential to a lower water potential across via osmosis.

Peaches have more solutes than pure water as it has higher sugar content than pure water. Hence, endosmosis will take place which means the water molecules will move from outside to inside of the peaches through wall of peaches takes place. Due to this, peaches will swell eventually.

Thus, the correct answer -  peaches will swell.

How are penicillin antibiotics are made?

Answers

Answer:

penicillin?

Explanation:

Answer:

Penicillium mold naturally produces the antibiotic penicillin. 2. Scientists learned to grow Penicillium mold in deep fermentation tanks by adding a kind of sugar and other ingredients. This process increased the growth of Penicillium.

Explanation:

Hey..... ngl thats kinda sus.......

Suppose that an unusually high degree of aurora kinase activity is observed in the cervix. What could we reasonably conclude about C5M treatment efficacy across all cervical cancer cell lines, using this new information and the data within the passage

Answers

Answer:

The division of cervical cancer cells will be inhibited  

Explanation:

Aurora kinases are a type of serine/threonine kinase enzymes that play critical functions during cell proliferation, and they are recognized to be potential targets in cancer therapy. The benzo[e]pyridoindole (C5M) agent is a hydrosoluble inhibitor of aurora kinases capable of inhibiting cell proliferation. C5M induces mitotic arrest by faulty (no separation) of the sister chromatids during cell division, thereby eventually leading to polyploidy and finally triggering cell death. It has been shown that C5M acts to prevent the entry in mitosis by inhibiting histone 3 (H3) phosphorylation of aurora kinases.

Which of the following is a description of a Resource that belongs to a country with a high carrying capacity

Answers

Answer:

where is the full question?

Explanation:

Answer:

B. Food is brought in from other places

Explanation:

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answer asapppp
Prokaryotes, like most living organisms, need movement to locate food and to survive. If a prokaryote needed to move to a new food source.
which structure would it use for locomotion?
pilli
2
capsule
-flagellum
so
chromosome

Answers

Answer: The answer is flagellum

Explanation: Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea, and flagellum is a whip-like structure that allows a cell to move. They are found in all three domains of the living world: bacteria, archaea, and eukaryota, also known as protists, plants, animals, and fungi. Also The primary role of the flagellum is locomotion, but it also often has function as a sensory organelle, being sensitive to chemicals and temperatures outside the cell. Flagella are organelles defined by function rather than structure. Flagella vary greatly.

( hope this helped )

Answer:

Flagellum

Hope this helps!

Explanation:

what's the difference between infectious diseases and non-infectious diseases?

Answers

Answer:

[tex]\boxed{\sf {view \: explanation}}[/tex]

Explanation:

Infectious diseases are contagious and can be spread from one person to another. Non-infectious diseases are not contagious and cannot be spread from one person to another.

Few examples of infectious diseases include influenza, SARS, and common cold.

Few examples of non-infectious diseases include cancer, diabetes, and many heart diseases.

what factor is found in a scientific claim

Answers

Answer:

similar results in multiple tests of the claim

Explanation:

on some of my study cards

Any of a large group of diseases characterized by a condition in which the immune system produces antibodies against its own tissues, mistaking healthy cells, tissues, or organs for antigens is called a/an

Answers

Explanation:

Autoimmune Disorders

A plants can have either brown (B) or red (b) leaves. Brown is the dominant trait. If a plane has a genotype bb; which best describes the plant.

Answers

Answer:

Explanation:

A plants can have either brown (B) or red (b) leaves with brown being a dominant trait meaning that it can be BB or Baby

While the red leaves are inherited in the recessive condition as bb.

Thus, a plant with a genotype of bb can be described as having a phenotype/ an appearance with red leaves i.e. the plants produces red leaves due to this genotype.

Which sustainable practice is paired correctly with its impact on the environment? Using bamboo results in an increased use of forest trees. Practicing contour plowing results in a need for more land. Setting irrigation systems to run longer results in a reduction of water use. Building more wind farms results in a reduction of fossil fuel use.

Answers

Hey there! I'm happy to help!

Using bamboo results in an increased use of forest trees. Bamboo is a grass, not a tree. I don't see how using more bamboo would increase your usage of trees. This option is incorrect.

Contour plowing is when your plow around the contour lines (which are basically like elevation lines) of a hill or slope. This actually reduces soil erosion and lasting effects of natural storms and disasters, so it does not result in a need for more land. This option is incorrect.

Setting irrigation systems to run longer results in a reduction of water use. Irrigation is a system of  watering, so you need water for it. It would not reduce water use. This option is incorrect.

Building more wind farms results in a reduction of fossil fuel use. If you are getting your power from renewable resources like the wind or the sun, you will not need to use as many fossil fuels, and this would reduce their use. This option is correct.

Have a wonderful day!

The practices that aid in economic, human and ecological dynamism and health is called sustainable practices. This procedure helps in conservatively preserving the limited sources.

The correct pairing is:

Option D. Constructing more wind farms results in a decrease in fossil fuel usage.

The practices can be explained as:

Using too many bamboos will result in the degradation of lands and increased soil erosion. It will not affect the usage of other forest trees.

The method of agriculture practice in which the ploughing is done near the contour lines is called contour ploughing and does not need much land also helps in reducing soil erosion and disasters.

The irrigation system conserves water and is a beneficial technique of watering the agricultural lands with an efficient amount of water.

Wind energy generates more energy and power which is a renewable source compared to fossil fuels and reduces the use of petrol, diesel and coal.

Therefore, option D is correct.

To learn more about sustainable practices follow the link:

https://brainly.com/question/141936

The current taxonomic system that taxonomists use (and that we are using during our Summer session) follows a taxonomic scheme that recognizes _____ (a number) Kingdoms in the Domain Eukarya (also spelled Eucarya).

Answers

Answer:

The correct answer is - 4 kingdoms.

Explanation:

According to the current classification or taxonomic system used by many taxonomists is the modern Linnean classification system and according to this, there are four kingdoms Protista, Fungi, Plantae, and Animalia in the domain eukarya. there are two more kingdoms in prokaryotes that are monera and archaebacteria

Thus, the correct answer is - 4 kingdoms.

Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow. What characteristic do these cells most likely share with cancerous cells? A) They form tumors. B) They spread through the blood. C) They divide rapidly. D) They contain a mutation.

Answers

Answer:

c

Explanation:

Which piece of evidence would strongly support the RNA-first hypothesis? finding a protocell that could carry on metabolism as well as reproduce discovering a way to make RNA more stable than DNA finding a mechanism whereby proteins could assemble DNA out of free nucleotides being able to build microspheres that contain only protein and RNA finding a living organism that uses RNA as its genetic material

Answers

Answer:

The correct answer is -  finding a living organism that uses RNA as its genetic material.

Explanation:

The RNA world theory recommends that life on Earth started with a simpler form of RNA particle that could duplicate itself. The RNA world speculation recommends that life on Earth started with a basic RNA particle that could duplicate itself without assistance from different atoms.

The RNA world theory is upheld by RNA's capacity to store, transmit, and copy hereditary data, as DNA does. RNA can go about as a ribozyme, an uncommon kind of enzyme. Since it can play out the role of both DNA and enzyme, RNA is accepted to have once been equipped for supporting free living things.  

According to the hypothesis is that RNA, a nearby relative of DNA, was the main hereditary atom to emerge around 4 billion years back, however in a simpler form of life that later developed into the RNA and DNA particles that we have in life today

Thus, The correct answer is -  finding a living organism that uses RNA as its genetic material

The sudden rapid movement of an unsaturated cohesive mass of soil, regolith, or bedrock is a The sudden rapid movement of an unsaturated cohesive mass of soil, regolith, or bedrock is a:______
a) debris avalanche.
b) mudflow.
c) landslide.
d) rockfall.

Answers

Answer:

The correct option is C: landslide

Explanation:

A landslide is a huge amount of land, rocks, and other materials that moves downhill. These land moves are caused by erosion and other strengths that may cause the land to move and fall from a steep hillside. Erosion might cause separation of different material layers, and when a land o rocky layer is separated from its immediately anterior one, gravity causes the fall of these layers.

In general, these land moves are very destructive. They can cover rivers, routs, buildings, among others, putting in danger any kind of life.  

There are other moves very similar to landslides, such as mudflow, avalanche, or rockfall.

Rockfall refers to the fall or big rocks from a precipice or steep hillside.

Mudflow refers to a thick stream of mud and other materials.

Avalanche refers to the collapse of snow and other materials.

After Frida stops exercising, she continues to breathe heavily. What is most likely occurring in her body?
O Heavy breathing during exercise has produced an oxygen surplus in her muscles. This oxygen is being​

Answers

Answer:

Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.

Explanation:

Two examples of how plants move include changing location as part of reproductive strategies and their growth in response to different environmental factors. Explain the impact one of these examples may have on secondary succession in an area after a significant disaster.

Answers

Answer:

Secondary succession occurs when the severity of disturbance is insufficient to remove all the existing vegetation and soil from a site. Many different kinds of disturbances, such as fire, flooding, windstorms, and human activities (e.g., logging of forests) can initiate secondary succession. Pioneers of secondary successions face quite different conditions from those that accompany primary succession. Secondary successions often start with resource-rich conditions associated with high light availability and reduced competition for nutrients and moisture. Disturbances may also be short-lived; for example, gaps created in forest canopies close as the crowns of surrounding trees expand and as seedlings and saplings in the understory grow up in response to increased light. Pioneers rely on recruitment from propagules present in the soil, or that disperse into the site after disturbance occurs. Pioneers are able to outcompete established vegetation that survived the disturbance by maintaining high juvenile growth rates. Some of the fastest growing trees are pioneers in tropical rain forests. Individuals of the balsa tree Ochroma pyramidale, for example, can grow from seedlings to adults with >30 cm trunk diameter in <10 years.

The difference between pioneer and nonpioneer species is difficult to delineate (Table 1). Attempts to define distinct life-history strategies (implying coordinated evolution of life-history traits) are confounded because key traits such as propagule size and juvenile growth rate can vary over several orders of magnitude within a community and show broad overlap among species with contrasting habitat requirements. Nonetheless, interactions among traits can be used to describe some life-history tradeoffs that largely constrain the habitat requirements of pioneers. For vascular plants, paramount among these is a tradeoff between growth in the sun and survival in the shade (Figure 3). The high growth rates of pioneers are maintained by allocating a large fraction of the plant’s resources to new leaf area production, and by investing in nutrient-rich leaf tissue that can attain high-maximum photosynthetic rates. A consequence of preferential allocation to leaf production is that few resources remain that can be used to defend the plant against herbivores and pathogens, or to recover from physical damage. This results in high mortality, particularly in the shade, where resources needed for tissue replacement are most limiting.

Table 1. Characteristics of pioneer tree species in tropical forests that distinguish them from nonpioneer species

Pioneer speciesNonpioneer species1. Juveniles recruit from seed following disturbance; seedlings are unable to survive beneath a forest canopySeedlings and saplings persist in the shade of a forest canopy2. Seeds germinate in response to cues provided by changes in light, temperature, or soil nitrate concentrations indicating disturbance to canopy vegetationSeeds germinate immediately after dispersal or seasonally during periods favorable for establishment3. Seeds generally small; frequently dispersed by windSeeds may be large; frequently dispersed by vertebrates4. Seeds often persist in the soil (weeks to decades after dispersal)Seeds lack dormancy or remain in the soil for less than a year5. High height growth rate and juvenile mortality rateLower height growth, crowns often show lateral spread in the shade6. High maximal photosynthetic rate, light compensation point, and foliar nutrient concentrationsLow maximal photosynthetic rate, light compensation point, and foliar nutrient concentrations7. Short-lived leaves with high leaf area per unit leaf massLeaves of juvenile plants may persist for several years with low leaf area per unit leaf mass8. Open canopies with sparse branchingClosed canopies9. Low wood densityMedium–high wood density10. Low investment in chemical anti-herbivore defenseHigh investment in chemical and structural defenses11. Often form defensive mutualisms with antsDefensive mutualisms uncommon12. Adult lifespan typically &lt;100 yearsAdult lifespan up to 500 years13. Wide geographic and ecological rangeOften restricted geographic range

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keep rocking

What process is similar in function to genetic engineering but different in the mechanism it uses? A. Breeding for specific traits B. Cellular Respiration C. Genetic Calculus D. Replication in a bioreactor

Answers

Answer:

D. Replication in a bioreactor

Explanation:

Genetic engineering is defined as the process of gene manipulation in which a gene is altered by the introduction of new genes across species boundaries to produce an improved version of organisms.

The function of genetic engineering is to produce high quality and quantity of new organism.

Replication in a bioreactor has a similar function as genetic engineering but has a different mechanism.

Replication is a process in which DNA copy itself to form a new organism.

Replication in a bioreactor function to convert copies of DNA into high-quality product under optimal condition.

Hence, the correct option is "D. Replication in a bioreactor".

Angiosperms are flowering plants. The carpal is a reproductive organ within the flower. What part of the carpal becomes the fruit when fertilization occurs? The image shows a flower with 8 different lines pointing to different parts of the flower. The lines are labeled A through H. Part C Part D Part H Part I

Answers

Answer:

Ovary becomes the fruit while ovule becomes seed after fertilization.

Explanation:

There's no image so I can't show whether it's A or H.

Hope it helps.

Answer:

The answer is H

Explanation:

What is one way people have negatively affected land resources?
habitat restoration
urbanization
terrace farming
reforestation​

Answers

Answer:

URBANIZATION

Explanation:

Urbanization is one way people have negatively affected land resources

which has lead to total exploit and in availability of those resources for us.

What are resources?

Resources are physical raw materials that originated from the earth which are useful for production and many things by humans and theses resources can be land, air,water and so on.

Resources are classified as either renewable and non renewable.

Renewable are resources that replenished itselves like water, wind.

Non renewable are resources that don't replenish itselves , example include fossil fuels.

Therefore, Urbanization is one way people have negatively affected land resources.

Learn more about resources below.

https://brainly.com/question/1290230

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Is it organic or not organic

Answers

(1) organic compound

Which of the following macromolecules is matched with its correct role in the cell?

Choose ONE answer:

A. Carbohydrates — key component of the cell membrane (lipid bilayer)

B. Lipid — chemical messenger

C. Lipid — storage of short-term energy

D. Nucleic acid — chemical messenger​

Answers

Answer: B


Explanation : carbohydrates are stored in the form of fats in the liver

When the teacher was handing out this test, you noticed that your respiration rate and heartbeat increased, your palms got sweaty, and your hand shook a little. Your pretest behaviors were triggered by the __________ nervous system. Upon completion of the exam, your body returned to its normal state by way of the __________ nervous system.

Answers

Answer: sympathetic nervous system & parasympathetic nervous system

Plants that are adapted to live on land ( botanical term)​

Answers

Answer:

"Embryophytes " is the perfect solution.

Explanation:

Each of some kind of plant sub-system that maintains the embryo inside the maternal tissues, including the tracheophytes as well as bryophytes.The other most common species of organisms or plants seem to be the surface plants including embryophytes, furthermore precisely Embryophyta or Metaphyta. They are considered as 'land plants' but even though, in comparison to the connected green algae, those who continue living primarily throughout terrestrial environments, mainly aquatic ones.

Oil _____.

is a renewable resource
can be used directly from the ground
is the least polluting energy source
must be removed from the earth using drills

Answers

The answer is the last one. Removing from drills. It’s a non renewable source.

Oil well is a renewable resource

can be used directly from the ground

is the least polluting energy source

must be removed from the earth using drills

Write down three functions of the blood

Answers

Answer:

blood has 3 main function which is Transport protection and regulations.

Answer:

Transport, protection, regulations.

Explanation:

Norepinephrine and epinephrine influence all of the following except __________ functioning. A. heart B. lung C. nervous system D. sex drive

Answers

Hey Again!!

Your answer will be D. Sex drive.

Hope This Helps <3!!

By ☆Itsbrazts☆

Answer:

Hey!

Your answer would be D. Sex drive!

Explanation:

Hope this helps!

:>

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Compare and contrast the contributions of Neel, Pauling, and Ingram to our understanding of the genetic and molecular basis of sickle cell disease (SCD). A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is the 95% confidence interval for the mean score, , of all students taking the test Help please!!! Thanksss which is not the following characteristics is not associated with a general ledger? Fill in the blank in the following sentence with the appropriate present tenseform of either ser or estar below.Mara, Paloma y yomuy guapas hoy.A. estnB. sonC. estamosD. somosSUBMIT Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k. A) 2 B) 3 C) 4 D) 5 IF YOU ANSWER IN 5 MINUTES I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!! what are the two type of element of environment In Spanish please, will mark brainliest! Performance Challenge Write yourself an excuse note for school in Spanish. In the note, talk about the last time you were sick. What were you sick with? What did you do to help yourself get better. Were there things you couldnt do? On June 1, Norma Company signed a 12-month lease for warehouse space. The lease requires monthly rent of $550, with 4 months paid in advance. Norma Company records the payment by debiting Prepaid Rent $2,200 and crediting Cash $2,200. At the end of June, what should be the balance of Norma's Prepaid Rent account Fill in the blanks in the following statements: 1. A parsec is defined as the distance from the Sun which would result in a parallax of_____ arcsecond as seen from Earth when observed 6 months apart. 2. One parsecs is about_____light years. 3. The more distant a star, the_____its parallax. 4. The statement "we can measure stellar parallax for most stars in our galaxy" is_____. 5. The closest stars have parallaxes smaller than______arcsecond. 6. The first successful measurements of stellar parallax were made by______in year______for the star named. 7. Star Fred has parallax four times greater than star Bob. Star Fred is______times______then star Bob. Nissans all-electric car, the Leaf, has a base price of $32,780 in the United States, but it is eligible for a $7500 federal tax credit. A consulting engineering company wants to evaluate the purchase or lease of one of the vehicles for use by its employees traveling to job sites in the local area. The cost for leasing the vehicle will be $4200 per year (payable at the end of each year) after an initialization charge of $2500 paid now. If the company purchases the vehicle, it will also purchase a home charging station for $2200 that will be partially offset by a 50% tax credit. If the company expects to be able to sell the car and charging station for 40% of the base price of the car alone at the end of 3 years, should the company purchase or lease the car? Use an interest rate of 10% per year and annual worth analysis. WILL GIVE BRAINLIEST PLZ HELP Which equation has a graph that is perpendicular to the graph of 4x - 2y = 1?Select one:O a. y = -2x + 8O b. 6x - 3y = 9O c. 2x + 4y = -1 As a financial responsibility, the sponsoring broker must keep a journal for each seller client.that is filled out once per year.that is in the back of the employee manual.for each escrow account. A submarine is moving parallel to the surface of the ocean at a depth of 626 m. It begins aconstant ascent so that it will reach the surface after travelling a distance of 4420 m.a) What angle of ascent, to the nearest tenth of a degree, did the submarine make? (3marks)b) How far did the submarine travel horizontally, to the nearest metre, during its ascent tothe surface? (3 marks) A tissue sample is three cells thick. Each cell has a thickness of 0.000004m. What is the thickness of the tissue sample in mm. Give your answer in standard form. PLZ SHOW WORKING The logistic growth function f(t)equals440 Over 1 plus 13.7 e Superscript negative 0.28 t EndFraction describes the population of a species of butterflies t months after they are introduced to a non-threatening habitat. How many butterflies are expected in the habitat after 20 months? Round to nearest whole number. The average college lecture hall (auditorium) can seat 60 students with a standard deviation of 21. Assume that a total of 60 lecture halls are selected for a sample. What is the standard deviation for the sample mean? An opinion is something that is accurate. objective. subjective. unchanging. Davina attends school regularly and has made great strides in her understanding of material in her science classes. Being able to reason more like a mature adult, Davina is in which of Piaget's developmental stages? a. Formal operational b. Concrete operational c. Sensorimotor d. Preoperational