Carbon six, Hydrogen 12, Oxygen 6
<span>aerobic respiration requires oxygen.</span>
Its b. Ecosystem
Population is the number of a species in an area, it has nothing to do with physical characteristics.
Abiotic is just an adjective meaning not alive
Competition is just the interactions between organisms in the struggle for food, water, space, mates, and many other things again not physical characteristics
B. The mitochondria section stores all the cells energy
