It's Copper (Cu). because when copper oxidizes it becomes green
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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).
Answer:
Air, everywhere, salt, and in the cold
Explanation:
Will take place in the nucleus where the DNA is located
