AP BIOLOGY

Detailed explanation-1: -Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.

Detailed explanation-2: -Animals obtain their carbon by eating plants; they release carbon in respiration. Micrororganisms (such as fungi and bacteria) return carbon to the environment when they decompose dead plants and animals.

Detailed explanation-3: -When animals eat food, they get carbon in the form of carbohydrates and proteins. In animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon.

Detailed explanation-4: -Animals get carbon by eating plants or by eating other animals. Different products produce differing amounts of greenhouse gases. Common greenhouse gases include carbon dioxide, carbon monoxide and methane.

Detailed explanation-5: -Plants take in – or ‘fix’ – carbon dioxide from the atmosphere during photosynthesis. Some of the carbon is used for plant growth, and some of it is used in respiration, where the plant breaks down sugars to get energy.