Living organisms contain many complicated molecules. which of these is a reason that carbon is important in these molecules? a. a carbon atom can form a bond with only one other carbon atom. b. carbon bonds with the lightest and smallest element. c. a carbon atom can form only one bond at a time with another atom d. carbon forms both single and and double bonds

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: