1. False
2. True
3. False
4. False
5. True
6. Methane (CH₄)
7. Photosynthesis: Carbon dioxide from the atmosphere is absorbed by plants and converted into glucose and oxygen.
Respiration: Plants and animals release carbon dioxide back into the atmosphere as a byproduct of cellular respiration.
Decomposition: When organisms die, decomposers break down their organic matter, releasing carbon dioxide.
Combustion: Burning of fossil fuels and biomass releases stored carbon as carbon dioxide.
Ocean Uptake: Oceans absorb carbon dioxide from the atmosphere, which can be used by marine organisms or stored in sediments.
8. B. Methane (CH₄)
Parent Tip: Review the logic above to help your child master the concept of carbon cycle worksheet.