Food chain
Cycles
Organisms
Problems
Ecosystem
100

This is always the first organism in a food chain.

producer

100

Plants take in this gas from the air for photosynthesis.

Carbon dioxide

100

An animal that kills and eats other animals.

Predator

100

Harmful substances added to the environment.

Pollution 

100

All the members of one species living in an area.

Population 

200

This is the name for an animal that eats only plants.

Herbivore

200

This process uses oxygen and releases carbon dioxide back into the air.

Respiration 

200

An animal that is hunted and eaten by a predator.

Prey

200

 The destruction of forests by humans.

Deforestation 

200

The place where an organism lives.

Habitat

300

This is the name for an animal that eats both plants and animals.

Omnivore

300

These organisms, like fungi and bacteria, break down dead things.

Decomposers

300

A cactus has a thick, fleshy stem to store this.

Water 

300

The gradual warming of the Earth's surface.

Global warming 
300

All the living and non-living things in an area, and how they interact.

Ecosystem

400

This shows the transfer of energy from one organism to another.

food chain

400

Plants need this substance from the soil to make proteins.

Nitrate 

400

These are the special pores on a leaf that allow gases to move in and out.

Stoma

400

The main cause of increased carbon dioxide in the atmosphere.

Burning the fossil fuels

400

An organism that gets energy by eating other organisms.

Consumer

500

This diagram shows all the interconnected food chains in an ecosystem

Food web 

500

This gas, needed for respiration, is produced by plants.

Oxygen 

500

Animals struggle against each other for limited resources like food and space.

Competetion 

500

These human-made chemicals were found to be destroying the ozone layer.

CFC(Chlorofluorocarbons)

500

Many countries signed this agreement to stop using CFCs and protect the ozone layer.

 Montreal Protocol