Im dumb so help

What is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ.

The speaker in “the courage that my mother had” is a daughter friend grandchild mother

Which statement is an example of a complex sentence? a. although he denies them, dr. vasquez faced several scandals last year. b. people tend to use too many clauses in sentences that should be simple. c. cars tend to be expensive, but airplanes are in a price range of their own. d. i am in favor of proposition 1, and i am also in favor of proposition 16.