Which would best keep the oxygen cycle stable? O A. Dumping toxic chemicals into the ocean
O B. Cutting down jungles to create farmland
O C. Reducing the amount of deforestation
O D. Eliminating parks in large cities

C

Explanation:

All of the other answers would lead to the oxygen not being stable.

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explanation:

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genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).