If oxygen is not present , fermentation of the pyruvate molecule will occur

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Answer: Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
Explanation:
Answer:
The top Predators
Explanation: The top predators are the least numerous organisms to maintain the population of the other organisms. If the top predators were the most numerous than the species in the forest would go extinct because they would eat all of the organisms lower on the food chain and would therefore starve to death. The top predators maintain the population of the forest by eating the lower organisms so that the amount of plant life will not go extinct.
Answer:
Explanation:
Satellite cells are small glia that surround neurons' sensory ganglia in the ANS. These resemble the astrocytes of the CNS and assist in regulating the external chemical environment. PNS satellite glia are very sensitive to injury and may exacerbate pathological pain.