Please help me on both questions

answer:

The answer is

1) sedimentary

2)A

Explanation:

hope this helped

heats surface water up

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.