I believe the answer is C.
because when the dinosaurs thrived they ate most of the mammals which were small animals but when the dinosaurs went extinct the mammals grew larger in size and started to thrive.
The answer is D because the layers all the way at the bottom had to be there for other layers to be built on top
It is used by every living cell.
Cellular respiration is a process of combining oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Answer:
The answer for this is a protein D
Answer:
Hydrogen
Explanation:
If you combine the atoms of H2 and H5, you get 7
