AP BIOLOGY

Detailed explanation-1: -The human can be divided into two types of consumers-Primary consumer & Secondary consumer. Primary Consumer-When humans derive their nutrition directly from the producers (green plants) in the form of fruits & vegetables.

Detailed explanation-2: -Consumers constitute the upper trophic levels. Unlike producers, they cannot make their own food. To get energy, they eat plants or other animals, while some eat both. Scientists distinguish between several kinds of consumers.

Detailed explanation-3: -Decomposers are an important part of a food chain because they break down dead plants and animals and also the waste of other organisms, thus, keeping up a continuous flow of nutrients for the primary producers.

Detailed explanation-4: -A food chain describes how energy and nutrients move through an ecosystem. At the basic level there are plants that produce the energy, then it moves up to higher-level organisms like herbivores. After that when carnivores eat the herbivores, energy is transferred from one to the other.

Detailed explanation-5: -In an economy, a consumer buys goods or services primarily for consumption and not for resale or for commercial purposes. Consumers pay some amount of money (or equivalent) for goods or services.) then consume (use up).