Many features distinguish modern humans from the nonhuman apes. however, only two of these features define hominins. why?
a. proper taxonomic groups are always defined by the traits that all members of the group share.
b. the evolution of hominins involved several different changes that happened at different times.
c. only two of these features evolved early enough to apply to all the hominins.
d. proper taxonomic groups are always defined by the t

B. The evolution of hominins involved several different changes that happened at different times.

Explanation:

Answer

Choice B as stated

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.