Species means

Organism means

Population means

Carnivore means

Consumer means

Endangered means

Extinct means

Decomposer means

A "food-chain" is:

An ecosystem is:

A biome is a large community of plants and animals that occupies a certain region.

Air is the main source of energy for all living things.

A trophic pyramid shows how energy is transferred through a food chain.

Primary consumers are typically carnivores.

The amount of energy increases as it passes through the trophic pyramid.

In an arctic ecosystem, if there were more polar bears than crustaceans, the ecosystem would still be sustainable.

An adaptation is when plants and animals change their structure, function, or behaviour in ways that will improve their chances of survival in their habitat.

Human activity only has negative effects on habitats and the organisms living there.

Invasive species are plants or animals that are introduced into an ecosystem that start to overpower the domestic organisms.

An endangered species is one that is at risk of going extinct.

Which one of the following is NOT an examples of an abiotic factors in a habitat?  Sunlight, water, presence of prey, temperature.

Which of the following is NOT an example of the basic needs of living things?

A. sunlight

B. water

C. food

D. habitat

E. all of the examples are examples of the basic needs of living things

Photosynthesis requires _____________ to occur.

a. sunlight

b. water

c. nutrients

d. carbon dioxide

e. all of the above

Which level of a trophic pyramid has the most organisms?

The arrows in a food chain or food web show…