Answer:
D
Explanation:
This would assist in proving there were ice ages because it shows that cold adapted animals were living before, in what is now warm environments.
Most of the oxygen carried by blood is bound to hemoglobin an iron containing protein which also gives red blood cells their distinctive red colour
Intestinal gland secretes intestinal juice ,it contains enzymes and their role is to decompose food more and then conduct them into the large intestine or by intestinal absorption to the blood
Mice
Because it's eating energy from the plants