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Vikentia [17]
3 years ago
15

_______ cause(s) populations to change over time.

Biology
1 answer:
vekshin13 years ago
3 0
The answer is B., Natural Selection.

Weather certainly doesn't change populations, and genes only caused individuals in a population to be slightly ( genetically-wise ) different from the others. It does cause change, but not change in the whole population over time.
Natural disasters don't change the populations over time either. Natural disasters only caused change in their environment, at most.

So, the only answer left is natural selection, and it makes sense too! 
Natural selection is the process where the individuals with better traits suited to survive in that specific environment live on and give those good traits to their offspring.
The individuals with less suited traits to survive will die out, and will not be given an opportunity to reproduce and pass on their less suited traits, so over time, the population will increase of individuals with better suited traits to survive and the individuals with less suited traits will eventually die out, therefore making the entire population change.

Hope I helped you!
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Binding Ca2+ to the troponin complex causes ____________ to move
mylen [45]

Answer:

Tropomyosin

Explanation:

The calcium binding to troponin and induces the muscle contraction. The active binding site gets exposed due to the calcium binding.

The calcium ions then attaches with troponin molecule. This changes the shape of troponin and removes the tropomyosin protein from the binding site.  No ATP is available during this process.

Thus, the correct answer is option (d).

7 0
3 years ago
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In camels 1 hump is dominant to 2 humps if two camels breed and produce a camel with 2 humps what would be the possible genotype
Assoli18 [71]

Answer:

H=1hump

h=2humps

possible genotypes: HH Hh Hh hh... 1/4 chance they produce a camel with 2 humps.

u got to make a punnet 2×2 square. put one parent on top and one on the side. it makes it easier to solve.

6 0
3 years ago
What are glaciers? A glacier is a huge mass of ice that moves slowly over land.
tigry1 [53]

Answer:

What do they look like?

Glaciers look like solid blocks of ice.

What climate do they exist in?

Regions that have high snowfall in winter and cool temperatures in summer.

Where can you find them?

Most of the world's glacial ice is found in Antarctica and Greenland, but glaciers are found on nearly every continent, even Africa.

What do you think we can learn from glaciers?

Glaciers preserve bits of atmosphere from thousands of years ago in these tiny air bubbles, or, deeper within the core, trapped within the ice itself. This is one way scientists know that there have been several Ice Ages. Scientists are also finding that glaciers reveal clues about global warming.

(The last question is unclear to me, so I'm going to take a guess as to what you meant)

Why is sea ice so important?

Arctic sea ice keeps the polar regions cool and helps moderate global climate.

I hope this helps!! :3

4 0
3 years ago
Hox genes are sometimes called "master switches". They have acquired this nickname because a single Hox gene will turn on (or of
Gwar [14]

Answer: B. False

Explanation:

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Why is it helpful that fungi attack and kill other parasitic organisms?
Ostrovityanka [42]

Answer:

it benefits the thing or area it lives on?

5 0
3 years ago
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