5. How does the body's immune system respond to recognized antigens? a. It uses antibodies to mark the antigen for destruction
b. It makes more antigens to fight off the invaders.
c. It makes red blood cells to match the "Type” of the antigens
d. It sends a negative feedback signal reduce inflammation
e. It sends a positive feedback signal to maintain homeostasis

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

Whats one way that rocks do not follow the typical rock cycle pathway?

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.