The overall mechanism of cellular respiration<span> involves four subdivisions: glycolysis, in which glucose molecules are broken down to form pyruvic acid molecules; the Krebs cycle, in which pyruvic acid is further broken down and the energy in its molecule is used to form high-energy compounds such as NADH.
Source: </span><span>Cellular Respiration - Cliffs Notes</span>
A Respiration by animals CO2 is being added.
B trees burning same
C tree leaves removed
D oil added
Humans have approximately 24,000 genes, but fruit flies are not far behind, with approximately 14,000 genes.
Archea is the correct answer. :) good luck!
