Question

1. name two ways that carbon (usually in the form of co₂) enters the atmosphere.
2. what process uses co₂ from the atmosphere?
3. what organisms carry out that process?

Explanation:

1. Factory emissions release CO₂ from industrial processes. Decay of organic matter by decomposing organisms also releases carbon - containing gases like CO₂.
2. Photosynthesis is the process that uses CO₂ from the atmosphere to produce glucose and oxygen.
3. Plants carry out photosynthesis. Some bacteria can also perform similar processes in certain environments.

Answer:

1. Factory emissions, decay of organic matter
2. Photosynthesis
3. Plants