Which statement best compares Mercury and Earth?

A. Mercury has very little atmosphere, but Earth has an atmosphere consisting of oxygen.

B. Mercury is very cold, but Earth has moderate temperature to sustain life.

C. They both have liquid water and carbon dioxide in their atmosphere.

D. They both have one moon.

A

Explanation:c C B D are just wrong hope this helps god bless

A

Explanation:

A ) Correct, Mercury almost doesn't have an atmosphere, but Earth has an Atmosphere with oxygen and perfect for sustaining life.

B) Incorrect, Mercury is the closest planet to the sun and the second hottest planet (Venus is the most hottest)

C) Incorrect, Mercury is to hot to have liquid water,and Mercury doesn't even have an good atmosphere to have carbon dioxide.

D) Incorrect, Mercury and Venus are the two planets which do not have any moons.

Hope u learned something new :)

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a electronegativity decreases beacuse the size of nucleus is bigger.