Answer:
B
Mutation is the ultimate source of genetic variation, but mechanisms such as sexual reproduction and genetic drift contribute to it as well Because prokaryotes are haploid, such a mutation immediately become part of the genetic makeup of the cell unlike eukaryotic diploids where a normal second copy of the gene usually protects the cell from the potentially lethal effect of such a mutation.
About 93 million miles or 150 km or 8 light minutes (don't know what that means)
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A drug is any chemical substance that alters the body physically or mentally for a non - nutritional purpose.
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It moves through rocks, water, soil and sediments I think hope this helps
