AP BIOLOGY

Detailed explanation-1: -All food chains start with energy from the sun. This energy is captured by plants. Thus the living part of a food chain always starts with plant life and ends with an animal. Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.

Detailed explanation-2: -Food is necessary to make energy. Living things need it to survive. It all starts with the Sun. Its energy is passed down to producer and then consumer.

Detailed explanation-3: -Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms.

Detailed explanation-4: -The food chain begins with producers, organisms such as green plants, that can make their own food. Through photosynthesis, producers convert solar energy to chemical energy, energy in the chemical bonds of the food.