Question

which organisms release carbon dioxide as waste?
consumers only
consumers and decomposers
producers and decomposers
producers only

Explanation:

• Producers (like plants) mainly take in carbon dioxide for photosynthesis but also respire (release some carbon dioxide).
• Consumers (animals) respire and release carbon dioxide.
• Decomposers (bacteria, fungi) break down organic matter and respire, releasing carbon dioxide.

Answer:

consumers and decomposers