The human digestive system is approximately 900 cm long. Food is moved through the digestive tract primarily by F.
hydrochloric acid in the stomach
G.
the enzymes amylase and pepsin
H.
bile produced by the pancreas
J.
muscular contractions

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

This is a biological reaction due to a stimulus. i need this quickly !

In figure 1-2 what is the distance from point b to point c?