Comprehension Questions 1. What are the 4 biogeochemical cycles?
2. Which cycle is particularly important?
3. Energy flows, but matter is
4. What are the six most common elements in organic molecules?

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The main biogeochemical cycles in our ecosystem are : (a) Water Cycle or Hydrologic Cycle (b) Carbon-Cycle (c) Nitrogen Cycle (d) Oxygen Cycle.Carbon Cycle is particularly the most important cycle in our ecosystem. It is the most important cycles on earth, the carbon cycle is the process through which the organisms of the biosphere recycle and reuse carbon.Energy flows, but matter is recycling.Carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.

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