Answer:
4600-4500 million years ago, the Earth formed and its crust cooled to become solid. 4500-4400 million years ago, the oldest known thing to have formed on Earth, zircon, formed along with solid crust and oceans. 4200-4100 million years ago, the close of the Hadean Period (there are no surviving rocks).
Answer:
Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent.
Explanation:
That'll be guanine. If you look up "pyrimidine" in google, it will tell you the two nucleotides that are pyrmidines are cytosine and thymine. So that leaves guanine.
Answer:
Actually, when the cells are full of water, they grow large and are packed closely together, making the carrot turgid. Conversely, when the cells lose water, they shrink and the carrot shrivels. That's what happens when you put a carrot in salty water and leave it there.
Explanation:
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