Which level of the energy pyramid contains the least energy? A. The top level
B. All levels contain the same amount of energy
C. The bottom level
D. The middle level

c. would be the answer : )

explanation:

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

answer; aerobic conditions; citric acid cycle (krebs cycle) electron transport chain;         anaerobic conditions; fermentation; both glycolysis;