AP BIOLOGY

Detailed explanation-1: -By adding more carbon dioxide to the atmosphere, people are supercharging the natural greenhouse effect, causing global temperature to rise.

Detailed explanation-2: -If carbon dioxide is completely removed from a plant’s environment, we would expect the plant to stop producing high-energy sugars altogether. CO2 is necessary for the plant to perform photosynthesis, meaning without CO2 the plant has no way to obtain energy-it will likely die in this scenario.

Detailed explanation-3: -Could increasing Earth’s population of plants affect carbon dioxide levels? Yes, it would decrease the levels. Photosynthesis acts to remove carbon dioxide from the atmosphere and store the carbon in plant tissues.

Detailed explanation-4: -Plants, through photosynthesis, and soils sequester roughly a third of carbon dioxide emissions released into the atmosphere each decade from the burning of fossil fuels. During photosynthesis, plants open tiny pores on their leaf surfaces to suck carbon dioxide from the air and produce their own food.