Answer:
During respiration, cells break down simple food molecules such as sugar and release the energy they contain. an energy releasing process that does not require Oxygen. In the mitochondria, the smaller molecules combine with oxygen to produce water and carbon dioxide. This reaction realeases a large amount of energy.
Explanation:
I believe the answer is A.
Sodium chloride is the 3rd most abundant element found in ocean water
The answer would be population
If its chemistry:
Hg: Mercury/Transition metal
Ni: Nickel/Transition metal
Ti: Titanium/Transition metal
