Answer: Phenotype
Explanation:
A set of <em>visible characters </em>that an individual presents as a result of the interaction between his genotype and the environment.
Stars with higher mass have shorter lifespans. When the sun becomes a red giant, its atmosphere will engulf the Earth. During the red giant phase, a main sequence star's core collapses and burns helium into carbon. After about 100 million years, the helium runs out, and the star turns into a red supergiant.
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<span>The projected world population in 2075, is 9.22 billion. This is not double our population now. Therefore, the answer would be C.</span>
