By motivating us to satisfy our physical needs, hunger and thirst serve to

Homeostasis can be characterized as the steady condition of a life form and of its interior condition; as the support or direction of the steady condition, or its balance; or basically as the adjust of bodily capacities. In the case that homeostasis is doing well, life proceeds; if unsuccessful, failure or demise results.

one way archaeology us understand the past is through the material objects it finds, allowing us to know what was being used, and when. for example a dig recently found a flute, believed to be the oldest musical instrument found to date.

i hope this

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.