Answer: At about three thousand miles in diameter, Mercury is the smallest planet in the solar system. But its core is massive — it accounts for more than three-quarters of the little planet's diameter, and more than half its mass. ... So even though Mars is bigger than Mercury, it's less dense — a rocky planet with a difference.
Explanation:
Answer:
I believe, The rock is a minimum of 1.5 million years old but it may be older
Explanation:
Gradpoint
<span>A-Imprinted in stone </span>
Answer:
cells
Explanation:
all living organisms need to have cells