Which of the following is not a possible effect of rising carbon dioxide levels on plants? a. increased photosynthesis b. increased plant mortality c. increased crop productivity d. increased plant growth

The correct answer is:

B. increased plant mortality.

I know this answer is correct because I just took the "Climate and Change in Ecosystems" Quiz on Edgenuity.

Increased plant mortality is not a possible effect of rising carbon dioxide levels on plants. The correct option is B. More than enough carbon dioxide are continuosly been released into the atmosphere as a result of burining of fossils fuels. This excessive carbon dioxide has some negative effects on plants, but these does not include inreased mortality of plants.