Which hormone helps to coordinate a woman's cycle of menstruation? Select one:

a.
estrogen

b.
testosterone

c.
glucagon

d.
ACTH

Which statement best explains how cellular respiration maintain homeostasis in animals? it maintains body temperature by absorbing energy. it breaks glucose into energy required by the organism. it speeds up metabolism by making oxygen. it produces energy from hormones present in the organism.

Where is energy trapped inside the organelle chlorophyll

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?