AP BIOLOGY

Detailed explanation-1: -As carbon dioxide concentrations increase, so too does the rate of photosynthesis until a certain point where the graph levels off. At lower carbon dioxide concentrations carbon dioxide is the limiting factor because an increase in carbon dioxide causes an increase in photosynthesis.

Detailed explanation-2: -A higher concentration of carbon dioxide (CO2) in our atmosphere aids photosynthesis, thus contributing to increased plant growth. CO2 is essential for photosynthesis. By increasing the level of CO2, photosynthesis increases, but only if there is no other limiting factor.

Detailed explanation-3: -As the intensity of light increases, so does the rate of photosynthesis. This means light is the limiting factor The graph levels out when increasing the light intensity no longer increases the rate of photosynthesis.

Detailed explanation-4: -Answer: Light intensity, carbon dioxide concentration, and temperature are the three main limiting factors affecting photosynthesis.