Which statement best describes our current understanding of the relationship between CO₂ levels and photosynthetic activity? A) Increasing CO₂ levels will result in a sustained increase in photosynthetic activity in both herbaceous plants and forest trees. B) Increasing CO₂ levels will result in a sustained decrease in photosynthetic activity in both herbaceous plants and forest trees. C) Increases in photosynthesis rates due to increases in CO₂ levels are likely to be short-lived for some herbaceous plants, but may be more sustainable for forest trees. D) Increases in photosynthesis rates due to increases in CO₂ levels are likely to be short-lived for forest trees, but may be more sustainable for some herbaceous plants.

Question

Quizplus · Accepted Answer

Increased CO2 can initially boost photosynthesis, but nutrient limitations and other factors may limit long-term gains in herbaceous plants, while forest trees may sustain increased photosynthesis longer due to their size and resource access.

Which Statement Best Describes Our Current Understanding of the Relationship