APES FINAL EXAM REVIEW: TOP TEN LISTS

8) The Phosphorus Cycle is the only one without a presence of the gas in the atmosphere. Phosphorus is commonly a limiting nutrient. Phosphate is the form that organisms that able to use. Phosphorus is also a leading cause for algal blooms and eutrophication, leading to hypoxic conditions. 9) Sinks versus Sources are very different. ................
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