Question

All life must maintain an internal balance, despite environmental changes. This is called _____.

stimulus
heredity
homeostasis
evolution

Answer 1

Homeostatis. "homeo" means "the same" and "statis" means "stable or unchaning". Stimulus is something that causes a change, heredity is the way traits like hair color are passed from parents to offspring, and evolution is the slow change of something (usually a species) over time through natural selection.

Answer 2

homeostasis(maintanance of a contant internal body temperature)

Answer 3

constant*