Question

If carbon was the most common element found in the moons and planets, what element is missing that would make them similar to Earth?

Answer 1

Answer:

Oxygen:

I think that the one element they may need is oxygen. This is because most of the processes in the carbon cycle need oxygen.

Hope This Helps!

Answer 2

The other element would be Oxygen.

Explanation:

The carbon cycle occurs on Earth. This cycle contains the series of processes by which carbon compounds are inter-converted in the environment. On moons and other heavenly objects there is no life because there is no carbon cycle. Carbon and oxygen are the two gases required for photosynthesis process in plants to make carbon dioxide and then its return to the atmosphere through respiration.