Carbon or Nitrogen Cycle?

Plants take in carbon dioxide from the atmosphere to perform photosynthesis.

• Carbon Cycle
• Nitrogen Cycle
• Both

Nitrogen gas in the air is converted into ammonia by bacteria in the soil.

• Carbon Cycle
• Nitrogen Cycle
• Both

Animals eat plants to obtain organic molecules needed for growth.

• Carbon Cycle
• Nitrogen Cycle
• Both

Dead organisms decompose, releasing nutrients back into the soil.

• Carbon Cycle
• Nitrogen Cycle
• Both

Fossil fuels are burned, releasing carbon dioxide into the atmosphere.

• Carbon Cycle
• Nitrogen Cycle
• Both

Lightning helps fix nitrogen into a usable form in the soil.

• Carbon Cycle
• Nitrogen Cycle
• Both

Plants absorb nitrates from the soil through their roots.

• Carbon Cycle
• Nitrogen Cycle
• Both

Carbon is stored long-term in rocks, fossil fuels, and ocean sediments.

• Carbon Cycle
• Nitrogen Cycle
• Both

Bacteria convert ammonia into nitrites and then into nitrates.

• Carbon Cycle
• Nitrogen Cycle
• Both

Carbon dioxide dissolves into the ocean from the atmosphere.

• Carbon Cycle
• Nitrogen Cycle
• Both