The ovaries in human females and the testes in human males are glands that produce hormones as part of the endocrine system. What function is the endocrine system primarily supporting through these glands and hormones? A.
breathing
B.
obtaining food
C.
reproduction
D.
removing waste

air quality

poor drinking water

and heavy polution

can lead to poor health

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.