Name________________________

Hour_________________________

Date_________________________

CH. 2.3 CYCLES OF NATURE WORKSHEET

Water Cycle

Carbon & Oxygen Cycle

Nitrogen Cycle

ASSESSMENT QUESTIONS

1. Which of the cycles of nature is NOT dependent upon living organisms?

2. Name the six most common elements that make up living organisms?

3. Using the carbon cycle diagram, from where do the producers/autotrophs get their carbon?

4. Using the carbon cycle diagram, from where do the heterotrophs get their carbon?

5. Using the nitrogen cycle diagram, from where do the heterotrophs get their nitrogen?

6. Using the nitrogen cycle diagram, describe nitrogen fixation and explain how nitrogen is released to the abiotic parts of the ecosystem.