What can be done to conserve earths coal supply for future generations?

a

Explanation:

if you invest in alternative then you save more and more coal

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

carbon atoms, hydrogen, oxygen, and nitrogen.