Question

Choose the correct equation from the following options to show the correct relationship between Gross Primary Productivity (GPP), Respirational Losses (R), and Net Primary Productivity (NPP).

• A. GPP = R / (NPP)²
• B. GPP = 2NPP + R
• C. GPP = NPP - R
• D. GPP - R = NPP

Hint:

Remember, NPP represents the energy available to the next trophic level, after subtracting the energy used for respiration.

Answer 1

The Correct Option is D

The correct relationship between GPP, R, and NPP is: \[ \text{GPP} - \text{R} = \text{NPP} \] Where:
- GPP is the total energy captured by producers in an ecosystem.
- R is the energy used by producers for respiration.
- NPP is the energy left after respiration and available for growth.
Conclusion:
The correct answer is (4) GPP - R = NPP.
Final Answer: \[ \boxed{\text{The correct equation is GPP - R = NPP.}} \]