Gross Primary Productivity Refers to the Total

question 2

Multiple Choice

Gross primary productivity refers to the total

• A) quantity of solar energy available to the ecosystem in a given period of time.
• B) quantity of solar energy reaching a given area of the ecosystem.
• C) energy trapped initially by the producers.
• D) energy used by the heterotrophs of the ecosystem in a given period of time.
• E) energy used by the producers for their growth and reproduction.

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