Question

the carbon cycle is closely related to which of the following?
water cycle
nitrogen cycle
rock cycle
movement of oxygen
question 8
why do we always see the same side of the moon?
the moon doesnt rotate.
the moon rotates at about the same speed as the earth rotates.
the moon revolves around the earth at the same rate the earth rotates on its axis.
the moon rotates on its axis at about the same speed as it revolves around the earth

Explanation:

The carbon cycle involves the movement of carbon in various forms (e.g., CO₂ in the atmosphere, organic carbon in living organisms). The movement of oxygen is closely related as in photosynthesis (where CO₂ is taken in and O₂ is released) and respiration (where O₂ is consumed and CO₂ is produced).

For the moon question, the moon rotates on its axis at about the same speed as it revolves around the earth. This is called synchronous rotation. If the moon didn't rotate (first option), we would see different sides as it orbits. If its rotation speed was same as earth's rotation (second option, which is about 24 - hour cycle) or its revolution speed was same as earth's rotation (third option), it wouldn't result in us seeing the same side. Only when its rotation (about 27 - day cycle) and revolution (about 27 - day cycle around earth) speeds are same (fourth option) do we always see the same side.

Answer:

movement of oxygen; The moon rotates on its axis at about the same speed as it revolves around the earth.