Unit #2

More than one individual or population in an ecosystem that relies upon the same limited resources

• Competition

• My teacher

• Consumers

• Decomposers

When two or more individuals or population attempt to obtain a single resource.

• Competitive Interaction

• Energy Transfer

• Decomposers

• Mutually Beneficial Interactions

An organism that must consume other organisms for nutrients

• Consumers

• Decomposers

• Producers

• Fish

Organisms such as bacteria and fungi that break down the remains of dead plants and animals.

• Decomposers

• Consumers

• Gross

• Secondary Decomposers

A system comprising all the biotic and abiotic factors in an area and all the interactions among them

• Ecosystem

• Rain Forest

• Producers

• Rain Forest

Overlapping food chains with different pathways for the flow of food energy in an ecosystem

• Food Web

• Food Chain

• Decomposers

• Populations

An interaction between organisms or species that is helpful to both

• Mutually Beneficial Interactions

• Predatory Interaction

• Organism

• Energy

The interaction between two animals in which one animal eats the other

• Predatory Interaction

• Carnivore

• Food Web

• Primary Consumer

Organisms that transform energy from the Sun and use carbon dioxide and water to make food

• Producers

• Consumers

• Decomposers

• Predator

The position an organism occupies on the food web

• Trophic Level

• Apex Predator

• Lion

• Primary Consumer