How have the historic levels of melanin in human populations changed due to migration? (1 point)


humans that produced less melanin became more common as populations migrated away from the equator.


humans that produced more melanin became more common as populations migrated away from the equator.


humans that produced more melanin became more common as populations migrated toward the equator.


humans that produced less melanin became more common as populations migrated toward the equator

Answers

Answer 1

Answer:

i would say A

Explanation:

Answer 2

Answer:

A

Explanation:

the answer is A because human eat grass :)


Related Questions

Why have scientist devised a system of comparative weights for atoms rather than using actual weights

Answers

Answer:

Because of multiple reasons:

Explanation:

Atoms are way too small to weigh.They couldn't use weight, they would have to use mass.Some atoms are free-floating, because they are the air.If they even made a scale that measured each atom, it would also catch the air atoms as well, unless they had a vacuum chamber, but even then, no one can make a perfect vacuum, space is not even a perfect vacuum...

Hope this helps.

During light detection in a photoreceptor, light directly causes what molecular change?.

Answers

During light detection, the light causes a retinal change from cis to trans conformation in regards to the opsin protein.

What is a photoreceptor?

Photoreceptors are the name we use to refer to a specialized form of neuron cells. These cells are crucial in our ability to see, they allow vision. Their job is to receive and interpret light as information. They do this using a protein named opsin, as well as specific conformations of the retina, such as cis or trans, which change with the light.

Therefore, we can confirm that during light detection, the light causes a retinal change from cis to trans conformation in regards to the opsin protein.

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What is another name for macro evolution

Answers

Another name for macro evolution is speciation.

Peroxidase is a protein. What is this protein’s function, and how did it get its name?.

Answers

Answer:

Most peroxidases are ferric heme proteins; one notable exception being the glutathione peroxidase, which is a selenium-containing enzyme. They are present in virtually all living species.

Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.

Which equation represents Newton's second law of motion in terms of momentum?

Answers

F • t = m • v

Momentum = mv

Research and list the costs and benefits of using uranium as an energy resource. do the
benefits outweigh the costs for the united states?

Answers

No.
Uranium is extremely reactive and dangerous so safety gear, refining, outreach, switching utilities, etc. outweigh the benefits

Which of the following is NOT one of the causes of ocean currents?

A. wind patterns

B. the planet's rotation

C. unequal heating of surface waters

D. the different seasons

pls help ​

Answers

Answer:

D.

Explanation:

Ocean currents do not change the different seasons nor the weather of the atmosphere.
hope this helps :)

Answer:d

Explanation:

Plants lose a great deal of water from their leaves in a process referred to as:.

Answers

Answer:

Plants lose a great deal of water from their leaves in a process referred to as: transpiration

Explanation:

How is mitosis related to cancer

Answers

Answer:

Mitosis is closely controlled by the genes inside every cell. They continue to replicate rapidly without the control systems that normal cells have. Cancer cells will form lumps, or tumours, that damage the surrounding tissues.

Explanation:

hope this helps

have an awesome day -TJ

Cancer is essentially a disease of mitosis - the normal 'checkpoints' regulating mitosis are ignored or overridden by the cancer cell. Cancer begins when a single cell is transformed, or converted from a normal cell to a cancer cell.

True or false: Within a myofibril, each I band is bisected by a Z line to which the thin filaments are attached.

Answers

Answer:True

Explanation:This statement is true. Because the I band is bisected by a Z line which then anchors thin elements.

Which plant structures are common to all angiosperms?

Answers

Answer:

All angiosperms produce flowers, reproductive structures that are formed from four whorls of modified leaves. Most flowers have showy petals to attract pollinators, bribing insects and other animals with nectar, to get them to carry the male gametophyte through the air to another flower.

Answer:

spores,flowers,cones,endoskeleton

Explanation:

What are some specialized structures that help marine fishes live and reproduce in the ocean?

Answers

Some of the specialized structures that help marine fishes live and reproduce in the ocean are as follows:

FinsSwim bladderGills

What are specialized structures?

Specialized structures are those structures possessed by certain organisms that enable them adapt to their environment.

Fishes are known to adapt to aquatic environments whether marine or freshwater ecosystem.

Therefore, some of the specialized structures that help marine fishes live and reproduce in the ocean are as follows:

Fins - for swimming and changing directionSwim bladder - for buoyancy in waterGills - for breathing

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How many types of hydro mimics can the oceanid summon in total?.

Answers

Mimics of water. The Oceanid summons a variety of aquatic creatures that must be fought and defeated in order to harm the boss. Oceanid has the ability to spawn eight different types of mimics.


which
group is correct?

a. ringworm, mycotic infection, treatment by anthelmintic drug
ne
b. syphilis, lues, treponema pallidum
c. gonorrhea, neisseria, virus
d.trichinae, filariasis, helminthes, penicillin

Answers

Answer:

a

Explanation:

because they all cause infections

I need help with 45-49!! Please help..

Answers

48,I think it’s deposition ,we’ll I hope so

A diagram of a plant cell is shown.
The process being represented is ____.
A. Meiosis
B. Mitosis
C. Respiration
D. Mutation​

Answers

Answer:

Mitosis

Explanation:

All the pictures represent the 5 phases of mitosis: interphase > prophase> metaphase> anaphase> telophase

It cannot be considered as meiosis because we have a single cell dividing into 2, neither a respiration or mutation

Smith Auto uses a sales journal, purchases journal, cash receipts journal, cash payments journal, and general journal

Answers

The general journal of Smith Auto will be the first place where the company will record its data.

What is a journal?

The general journal is illustrated below:

July 3:

Debit inventory $3100

Credit Account payable $3100

July 6:

Debit Cash $600

Credit Sales revenue $600

Debit Cost of goods sold $450

Credit Inventory $450

July 7

Debit Equipment $5000

Credit Capital $5000

July 9

Debit Account receivable $750.

Credit Equipment $750

July 13

Debit Account receivable Bell $3200

Credit Sales revenue $3200

Debit Cost of goods sold = $2800

Credit Inventory = $2800

July 15

Debit Sales return $500

Credit Account receivable $500

July 22

Debit Building $20000

Credit Notes payable $20000

July 26

Debit Salaries expense $4400

Credit Cash $4400

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Match the following.
1 .
omnivores
2 .
herbivores
3 .
scavengers
4 .
carnivores

wolves, coyotes

cattle, deer, mice

owls, snakes, alligators

hyenas, crows, vultures

Answers

Answer:

1. wolves, coyotes

2. cattle, deer, mice

3. hyenas, crows, vultures

4. owls, snakes. alligators

What are the characteristics of nonavianreptiles that set them apart?

Answers

Answer:

Nonavian reptiles have dry skin with keratinized scales, a single condyle, internal fertilization, an amniotic egg, metanephric kidneys, and lungs.

Explanation:

what is the man system that runs our bodies

Answers

Answer:

the muscular system

Explanation:

Answer:

Circulatory system / Cardiovascular system: 

Explanation:

It circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away. Keeps the body's temperature in a safe range. Hope this helps!

How do I get rid of these when watching a video

Answers

Answer:

Thats the thing you cant the creator of the video put that there for you to watch other videos

Explanation:

If a deer eats grass, what percentage of energy will the deer acquire from the grass? 0. 1 percent 1 percent 10 percent 100 percent.

Answers

The deer eats grass, the percentage of energy will the deer acquire from the grass will be dependent on the food chain then the accurate solution is 10 percent.

In a food chain, the simplest 10 percent of the strength is transferred from one trophic stage to another. The grass is the manufacturer and the deer is the number one consumer, so, whilst the deer eats the grass, it acquires 10 percent of the entire strength of the grass. Rest strength is dissipated withinside the surroundings thru the metabolic tactics taking location withinside the grass.

What is the position of deer in the food chain?

The 2nd trophic stage includes organisms that consume the producers. These are known as number one purchasers or herbivores. Deer, turtles, and plenty of varieties of birds are herbivores. Secondary purchasers consume the herbivore.

Thus it is clear that 10 percent of energy will the deer acquire from the grass.

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how did supporters of the constitution convince opponents to approve it?

Answers

Answer:

promised to add amendments protecting liberties

Explanation:

mtsuedu

A segmented worm seen below is an invertebrate with what type of body symmetry? Question 19 options: Radial Bilateral Asymmetrical.

Answers

A segmented worm seen below is an invertebrate body have Bilateral symmetry.

What are the 3 types of symmetry of invertebrates?

At a very basic level of category, true animals can be largely divided into three levels based on the type of symmetry of their body plan:

radially symmetrical, bilaterally symmetrical, and asymmetrical

Thus, Bilateral symmetry is correct.

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An elephant has 56 chromosomes. Which statement about a zygote of an elephant is true?

Answers

Answer:

alright if this works the same way it does with humans (i'm almost totally sure it does but just in case) the answer is: the zygote has 56 chromosomes, 28 inherited from the mother and 28 from the father.

Explanation:

Why are the lysosomes useful during entrapment of particles?

Answers

Answer:

Lysosomes

Explanation:

Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids. Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself. In their simplest form, lysosomes are visualized as dense spherical vacuoles, but they can display considerable variation in size and shape as a result of differences in the materials that have been taken up for digestion. Lysosomes thus represent morphologically diverse organelles defined by the common function of degrading intracellular material.

how much water is in our bodies

Answers

Answer:

60%

Explanation:

Water makes up up to 60% of the adult human body. Water makes up 64 percent of the skin, 79 percent of the muscles and kidneys, and even 31 percent of the bones.

I hope this helps you

:)

What property of water describes the molecule as acting like a tiny magnet?

Answers

Answer:

Intermolecular forces. Water is a dipole and acts like a magnet, with the oxygen end having a negative charge and the hydrogen end having a positive charge. These charged ends can attract other water molecules.





HOPE THIS HELPS, HAVE A GREAT DAY!!~

Explanation:

Hello Fluffy Stawberry~

Answer: Intermolecular forces

Hope this helps have a nice day

From: Fluffy Stawberry~

Why is carpolestes a prime candidate among plesiadapiforms to be a euprimate ancestor?.

Answers

Answer:

Why is Carpolestes a prime candidate among plesiadapiforms to be a Euprimate ancestor? It had an opposable thumb. It had a nail instead of a claw on its first foot digit.

It had an opposable thumb. Its first foot finger had a nail rather than a claw. Plesiadapiforms were previously thought to be extinct members of the order Primates.

What is the Plesiadapiforms?Carpholites has a two-chambered auditory bulla, like Tarsius, which distinguishes it from early EU primates and all other known Plesiadapiforms.Plesiadapiforms are primitive primates, which means they lacked some primate characteristics while exhibiting others. Plesiadapiforms means "nearly adapiform," and refers to Plesiadapiforms that resemble some adapiforms (or adapoids; later-appearing species).Plesiadapiforms were on a much lower evolutionary stage than modern primates, possibly comparable to living tree-shrews despite sharing some skeleton traits. Plesiadapiforms first appear in the fossil record between 65 and 55 million years ago, though many had become extinct by the Eocene. They were possibly the first mammals to have finger nails instead of claws.

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You are sailing in the South Pacific Ocean, far from any plate boundary. Looming lion the horizon is a dark braid, rounded island with sparse vegetation. A few thin flows of orange lava drip into the sea. Some smoky vapor unfurls fork the center of the island. What kind of volcano is this? Explain.

Answers

The kind of volcano in this scenario is referred to as a shield volcano.

What is a Shield volcano?

This is the type of volcano whose appearance is like that of a warrior's shield and is formed by the eruption of highly fluid lava.

The lava however becomes thinner as it travels further such that it sometimes drips into neighboring sea.

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