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Answer: Genetic Change
Explanation:
Mutations contribute to genetic variation by causing new traits to emerge. Mutations happen when there is a change in the DNA of a creature developing in utero. These random changes in creatures are common, although most mutations end up being lethal or inhibiting to the organism. In rare cases, this mutation can prove benificial or helpful, and if the organism reproduces and the trait is passed along, it could become a new branch of genetic variation within the species.
As compared with adults, children
have smaller energy reserves and lower absolute anaerobic power output. This is
primarily because they have less muscle mass compared with adults. In anaerobic
conditions, the human body uses up glucose and phosphates stored in your muscles
for energy metabolism.
