PLS HELP ASAP Pick the best answer for 14 and write a couple sentences to a paragraph for 15. thxs so much luvs.

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

What are examples of the plant life and animal life that can be found in each type of terrarium

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.