Answer a because its true
Four different bases can be found on dna
Why did he??????
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Answer:
where are the answer choices to this ?
Explanation:
There's no land at the North Pole Instead it's all ice that's floating on top of the Arctic Ocean. ... Multi-year ice is thicker and has survived at least one melt season, whereas first-year ice is much thinner. Arctic sea ice usually reaches its minimum around mid-September each year.