Living Things Need Energy Chapter 16 Section 2 Living Things Need Energy

Herbivore: an organism that eats only plants.

Carnivore: an organism that eats animals.

Omnivore: an organism that eats both plants and animals.

Food chain: the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms.

Food web: a diagram that shows the feeding relationships between organisms in an ecosystem.

Energy pyramid: a triangular diagram that shows an ecosystem’s loss of energy, which results as energy passes through the ecosystem’s food chain.

An organism that eats only animals is a carnivore.

A triangular diagram that shows an ecosystem’s loss of energy is an energy pyramid.

An organism that eats both plants and animals is an omnivore.

An organism that eats only plants is a herbivore.

The pathway of energy transfer as a result of the feeding patterns of organisms is the food chain.

A diagram that shows the feeding relationships between organisms in an ecosystem is a food web.

Organisms that can make their own food from sunlight are called producers.

Grass is eaten by a prairie dog. The prairie dog is eaten by a coyote Grass is eaten by a prairie dog. The prairie dog is eaten by a coyote. This is an example of a food chain.

One food web arrow goes from a prairie dog to a coyote, showing that the coyote eats the prairie dog.

The decrease in the wolf population in Yellowstone National Park is an example of how availability of living resources affects all organisms.