7. Which layer of the atmosphere contains most of the carbon dioxide and water vapour in the atmosphere?
A. mesosphere
B. stratosphere
C. thermosphere
D. troposphere
The answer is D

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.

i think the answer is tomato juice? not entirely sure though