As CO₂ Concentrations in the Atmosphere Increase, How Might the Increase

question 191

Multiple Choice

As CO₂ concentrations in the atmosphere increase, how might the increase be expected to influence land-based NPP rates?

• A) NPP will increase because the CO₂ will replace other nutrients.
• B) NPP will decrease because the extra CO₂ will be toxic.
• C) NPP will not change because photosynthesis is not limited by CO₂.
• D) NPP will increase because CO₂ will inhibit respiration.
• E) NPP will decrease because CO₂ will stimulate respiration.

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Definitions:

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