Explanation:An Animal cell is a cell inside an animal and their are a lot of
different kinds of functions
I believe the answer would be Letter
B. Psychology
Hormones
The endocrine system includes various glands in the body that are responsible for secreting hormones into the bloodstream. Hormones are chemical substances produced by the body that regulate certain functions of cells and organs. Hormones can regulate sleep, sex, growth, stress, huger, metabolism, etc.
Carbon dioxide+water (with sunlight)= glucose +oxygen
<span>an animal whose mouth develops from a second opening in the early embryo, opposite to the initial opening blastopore of the rudimentary gut. Chordates and echinoderms are deuterostomes.</span>
