A biologist .....they study living things only.
Answer:
The last time levels of atmospheric carbon dioxide were this high came during the Pliocene Epoch, which extended from about 5.3 million to 2.6 million years ago.
Explanation:
Photosynthesis, the process which uses light energy to power the combination of carbon dioxide and water to form glucose and oxygen.
I think the best answer is:
<span>A. Tigers from adjoining populations will immigrate into the geographical area of this population.</span>
