Suppose That the Net Primary Productivity of a Particular Ecosystem

question 3

Multiple Choice

Suppose that the net primary productivity of a particular ecosystem is 80 units per year. The respiration rate of primary producers is 30 units per year, and the respiration rate of herbivores is 10 units per year. The gross primary productivity is _______ units per year.

• A) 40
• B) 50
• C) 70
• D) 110

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