What does a model of the carbon cycle show?(1 point)

Question

Responses

The amount of Earth’s carbon decreases.
The amount of Earth’s carbon decreases.

The amount of Earth’s carbon is constant.
The amount of Earth’s carbon is constant.

The amount of Earth’s carbon cannot be determined.
The amount of Earth’s carbon cannot be determined.

The amount of Earth’s carbon increases.

Answer 1

A model of the carbon cycle typically shows that the amount of Earth’s carbon is constant. This is because carbon is continuously cycled between various reservoirs, such as the atmosphere, oceans, and living organisms, though the form and location of carbon may change. Therefore, the correct response is:

The amount of Earth’s carbon is constant.