What does a model of the carbon cycle show?(1 point)
Responses
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 decreases.
The amount of Earth’s carbon decreases.
The amount of Earth’s carbon increases.
1 answer
The amount of Earth's carbon is constant.