Explain how an organism's ability to survive and reproduce can affect the entire population

The organism will pass on the traits to their offspring. If the offspring also has an increased chance of survival it will have a higher chance of passing on the traits. Over a long period of time the entire population can inherit this trait.

Explanation:

According to the theory of natural selection organisms with beneficial traits are more likely to survive to the reproductive stage and pass on the beneficial gene to their offspring. Natural selection selects beneficial traits.

it will increase due to the time span

it cools slower in the earth meaning the crystals have more time to form than lava on the surface