Which is required for both anaerobic respiration and aerobic respiration?

20 the main source of energy for our planet comes from the

The changes that the students observed, rapid breathing and sweating, would be classified as a to a change in a system.

How does the fossil record provide evidence that the modern whale evolved from the anthracotheres? a) the modern whale looks like their ancestor the anthracotheres. b) the modern whale has all of the same structures as their ancestor. c) there is not enough evidence to suggest the the modern whale evolved from the anthracotheres. d) the anthracotheres has a structure that is still present in the modern whale, but is no longer of use to the modern whale.