By what they eat

By how they breathe

By their size

By their species`

Every food chain depends entirely on a single species

Food chains are extremely fragile

Food chains can regenerate on their own

Food chains would not exist without humans

Food webs contain only producers, not consumers.

Food webs do not include decomposers.

Food webs contain many different, linked food chains.

Food webs exist in aquatic environments; food chains exist in terrestrial environments.

Parthenogenesis

Photosynthesis

Meiosis

Mitosis

Producer

Consumer

Decomposer

Human

It would cause consumers to consume less.

It would prevent decomposers from decomposing matter

It would prevent producers from producing nutrients.

It would not disrupt the food web at all.

Primary consumers eat only plants; secondary consumers eat other consumers.

Primary consumers eat other consumers; secondary consumers eat only plants.

Primary consumers eat plants and other consumers; secondary consumers eat plants and decompose matter.

Primary consumers eat plants and decompose matter; secondary consumers eat plants and other consumers.

They are primary consumers.

They are producers.

They are secondary consumers.

They are decomposers.