AP BIOLOGY

Detailed explanation-1: -Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

Detailed explanation-2: -Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.

Detailed explanation-3: -Photosynthesis is the method through which plants make their food. They use sunlight, carbon dioxide and water to produce energy, in the form of glucose (a type of sugar) and oxygen is something that is left over from this process.

Detailed explanation-4: -They calculated that annual sunlight-induced carbon dioxide emissions were between 13 megatons of carbon under overcast sky and 35 megatons of carbon under clear sky.