If Rates of Nitrogen Fixation Increased Tenfold in Terrestrial Ecosystems

question 98

Multiple Choice

If rates of nitrogen fixation increased tenfold in terrestrial ecosystems, would you expect a tenfold increase in primary productivity?

• A)Yes, because nitrogen is a limiting nutrient in terrestrial ecosystems.
• B)Yes, because there is an abundance of carbon dioxide in terrestrial ecosystems.
• C)No, because there are other limiting nutrients in terrestrial ecosystems besides nitrogen.
• D)No, because there would be a higher increase in primary productivity.