AP BIOLOGY

ECOLOGY

ENERGY FLOW AND PRIMARY PRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The elements carbon, oxygen, hydrogen and nitrogen combined make up about 96% of our bodies (carbon is about 18%). Carbon is necessary for life because it is a(n)
A
uncommon element in all living things.
B
element found only in the atmosphere
C
excellent bonder
D
is found mostly in dead things.
Explanation: 
There is 1 question to complete.