The answer should be C/Currents
Mitochondria are the energy factories of the cells. The energy currency for the work that animals must do is the energy-rich molecule adenosine triphosphate (ATP). The ATP is produced in the mitochondria using energy stored in food. ... This is a very efficient process for using food energy to make ATP.
Answer: Adaptation
species adapt to their environment
Selective pressures created by environmental factors can lead to success of <span>mutual individuals. So it is D</span>
