Answer:
c
Explanation:
Gas exchange. Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the area available for diffusion.
Could you elaborate more?
Answer:Mercury, Venus, Earth, and Mars
Explanation:
Traits are inherited trough the parents genes that are passed to the offspring trough both parents reproductive cells, that contain genes in their nucleus.
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Genetic variation is advantageous because it enables some individuals and, therefore, a population, to survive despite a changing environment.
