What do B cells make when they recognize antigens?
O A. Antibodies
O B. Pus
O C. T cells
O
D. Pathogens

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

What best describes the dropping height of a ball that bounces back up to a height of 45 cm