Absolute time is the answer
Answer:
Natural selection
Explanation:
Natural populations have variations. Organisms of a population have various genetic traits. Some of these genetic variations make the organisms better suited to the prevailing environmental conditions. These organisms are more likely to produce more progeny. Over generations, the frequency of the beneficial genetic traits increases in the population due to the higher reproductive success of the organisms with these genetic traits.
This process of differential fitness of organisms of a population where the organisms with adaptive genetic traits have survival and reproductive benefits is called natural selection.
It affects the environment by maybe causing pollution
One negative side effect of with anaerobic synthesis of energy is that a by product of glycolysis is lactic acid
lactic acid cause muscle fatigue and post exercise muscle soreness. when you exercise the body uses oxygen to break down glucose for energy. when one do intensive exercise, oxygen may not be enough therefore lactic acid is produced.