AP BIOLOGY

Detailed explanation-1: -Food web is an important conceptual tool for illustrating the feeding relationships among species within a community, revealing species interactions and community structure, and understanding the dynamics of energy transfer in an ecosystem.

Detailed explanation-2: -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-3: -The food chain, food web, and energy pyramid are all models that show feeding relationships and allow us to make predictions.

Detailed explanation-4: -Food web. A model that shows how matter and energy are transferred among producers, consumers, and decomposers in an ecosystem. Trophic level. An organism’s position relative to the primary energy source (such as the sun) in a food chain.

Detailed explanation-5: -An energy pyramid is a model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem. The model is a diagram that compares the energy used by organisms at each trophic level.