Trees produce energy from sunlight. Animals eat tree leaves for energy. This is an example of . * A.) Food web
B.) Food chain

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

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