Question

1. what is the carbon cycle often compared to?

a. a recycling system
b. a seesaw
c. a roller coaster
d. a greenhouse

1. what has to carbon when plants and animals go through decomposition?

a. it turns into oxygen and food.
b. it disappears.
c. it is released back into the soil.
d. it remains in the same form.

1. how do humans greatly contribute to the release of carbon dioxide into the air?

a. by planting more trees
b. by reducing their carbon footprint
c. by burning fossil fuels
d. by conserving water usage

Explanation:

1. The carbon cycle continuously moves carbon between Earth's spheres, reusing it like a recycling system.
2. Decomposition breaks down organic matter, releasing carbon back into soil as nutrients.
3. Burning fossil fuels (coal, oil, gas) releases stored carbon as CO₂, a major human-driven emission source.

Answer:

1. A. a recycling system
2. C. It is released back into the soil.
3. C. by burning fossil fuels