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

Question

Responses

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

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

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

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

Answer 1

The correct response is: The amount of Earth’s carbon is constant.

A model of the carbon cycle shows how carbon moves between different reservoirs (like the atmosphere, oceans, soil, and living organisms) but indicates that the total amount of carbon on Earth remains relatively constant over time, although it can change form and location.