NAU Biology BIO 326
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BIO326 : Ecosystem : Nutrients : Review Questions

Ecosystem Nutrients: Review Questions
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DUE: 28-Apr-2000. Work sent after this date will receive a grade of zero.
1. The global water cycle exemplifies many element cycles in that it has element reservoirs (compartments) and exchanges (transfers) among them.

a) Is the atmosphere water vapor compartment in steady-state? How did you reach your conclusion?

b) What is the magnitude of the total annual transfer into the atmosphere water vapor compartment? What are the units associated with this amount?

c) What is the residence time of water in the oceans?

2. How are nutrient cycles in terrestrial and aquatic ecosystems facilitated by microorganisms?

3. How important is vegetation cover to natural element cycles? What evidence supports your estimate of importance?

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