There Are Several Biogeochemical Cycles That Keep Ecosystems Running Smoothly

question 12

Multiple Choice

There are several biogeochemical cycles that keep ecosystems running smoothly. Which two depend on the same two linked processes?

• A) The carbon and oxygen cycles both depend on photosynthesis and respiration.
• B) The carbon and nitrogen cycles both depend on photosynthesis and respiration.
• C) The nitrogen and oxygen cycles both depend on photosynthesis and respiration.
• D) The hydrospheric and atmospheric cycles both depend on evaporation and precipitation.
• E) All the cycles work independently of each other.

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