13.4 Food Chains And Food Webs KEY CONCEPT

13.4 Food Chains And Food Webs KEY CONCEPT

13.4 Food Chains And Food Webs KEY CONCEPT Food chains and food webs model the flow of energy in an ecosystem. 13.4 Food Chains And Food Webs A food chain is a model that shows a sequence of feeding relationships. A food chain links species by their feeding relationships. A food chain follows the connection between one producer

and a single chain of consumers within an ecosystem. GRAMA GRASS DESERT COTTONTAIL HARRISS HAWK 13.4 Food Chains And Food Webs Consumers are not all alike.

Herbivores eat only plants. Carnivores eat only animals. Omnivores eat both plants and animals. Detritivores eat dead organic matter. Decomposers are detritivores that break down organic matter into simpler compounds. carnivore decomposer

13.4 Food Chains And Food Webs Specialists are consumers that primarily eat one specific organism or a very small number of organisms. Examples: orchids, sword-beak hummingbird, koala bear Generalists are consumers that have a varying diet. Examples: raccoon, cockroach, rat, horseshoe crab 13.4 Food Chains And Food Webs

Trophic levels are the nourishment levels in a food chain. Primary consumers are herbivores that eat producers. Secondary consumers are carnivores that eat herbivores. Tertiary consumers are carnivores that eat secondary consumers. Omnivores, such as humans that eat both plants and animals, may be listed at different trophic levels in different food chains.

13.4 Food Chains And Food Webs A food web shows a complex network of feeding relationships. An organism may have multiple feeding relationships in an ecosystem. A food web emphasizes complicated feeding relationships and energy flow in an ecosystem.

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