LS2-1 Review

Front

What happens to competition between organisms as resource availability declines?

Back

As the number of available resources declines, competition between organisms increases.

Front

What is essential for a freshwater ecosystem?

Back

It is important to have plants that use sunlight for energy, animals that eat other animals, and decomposers that break down dead organisms.

Front

What should a student consider when investigating competition between two organisms?

Back

The student should choose organisms that require the same resources.

Front

What do organisms and populations with similar needs compete over in an ecosystem?

Back

They compete over food, water, and shelter.

Front

When will there be competition between hawks and brown bears in the same habitat?

Back

There will be competition if both brown bears and hawks feed on the same species of fish.

Front

Define 'ecosystem'.

Back

An ecosystem is a community of living organisms interacting with their environment.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organisms, returning nutrients to the soil.

Front

What is the significance of resource availability in an ecosystem?

Back

Resource availability affects the population size and competition among organisms.

Front

What is competition in ecological terms?

Back

Competition is the struggle between organisms for the same resources in an ecosystem.

Front

Give an example of a biotic factor in an ecosystem.

Back

Plants, animals, and microorganisms are all biotic factors.