Photosynthesis
a: produces movement in plants
b: coverts light energy from the sun to chemical energy stored in glucose
c: coverts chemical energy into food that can be eaten by the plant
d: is responsible for converting oxygen into carbon dioxide

answer; i believe its (ovulation);

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

d. planting trees

the trees take in carbon to make oxygen.