Which of these is a way the immune system works with other body systems? A. T cells make chemicals that control blood pressure.
B. B cells boost memory in the brain.
C. The spleen makes digestive enzymes.
D. The spleen filters pathogens from blood.

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.