Answer:
D
Explanation:
Because these are in oceans and on land.
The best description about the brain stem is: it is the most important organ of our body's survival. It connects the brain and the spinal cord, controls the vital organs like the lungs and heart and it also coordinates the many essential body reflexes.
A because that animal is something else’s food then that animal decreases on number which means the other animal decrease in number and so on until it gets to the human population
I think its c.trace fossils because this is an print of an organism that was of the animal, but produced from them, which means it could be put on a rock.
