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100

It's the expression to describe the increase in the temperature of the planet.

What is global warming ?

100

It's the most common toxic gas in the atmosphere.

What is CO2 (carbon dioxyde) ?

100

It's a synonym for trash, garbage, litter or rubbish.

What is waste ?

100

It's a verb that indicates what you must do with lights when you leave a room.

What is "turn off"?

100

It's a source of air pollution that drivers use.

What is a car (a bus) ?

200

It's an enormous wave that arrives on the coast and causes damage.

What's a tsunami ?

200

It's a recyclable product that is made with wood and is constantly used in school.

What is paper ?

200

It's the verb used for what you do when you don't want an object anymore and you don't recycle it.

What is the verb "throw away" ?

200

It's a cleaning strategy to save water in your home. For this strategy, you mustn't go slow.

What is a shower ?

200

It's an important source of pollution and of employment.

What is the industry ?

300

It causes large natural zones to burn.

What's a wildfire ?

300

It's a recyclable product that is very solid, shiny, and can be used to contain certain foods for a long time.

What is metal (tin, aluminium) ?

300

It's an object that produces electricity from the big yellow globe in the sky.

What is a solar pannel ?

300

It's a strategy to avoid pollution and it's also exercise.

What is cycling ?

300

It's a source of land pollution that is used to produce more and better.

What are pesticides ?

400

It's when there is so much rain that there is water everywhere.

What is a flood ?

400

It's recyclable and without it human, animal and plant life is impossible.

What is water ?

400

It's a source of energy produced with objects that look like the top of a helicopter.

What is the wind ?

400

It's an object that helps avoid repetitive plastic pollution when you shop.

What is a reusable shopping bag ?

400

It's a source of pollution that travels in the air.

What's an airplane ?

500

It's when there isn't enough water, it's extremely hot, plants and animals are in danger.

What is a drought ?

500

It's a recyclable product but it isn't recycled enough. Enormous quantities of this product accumulate in nature.

What is plastic ?

500

It's a source of energy produced by blocking its normal flow.

A flow = un flux

What is water (a river) ?

500

It's the characteristic of an object that you buy but isn't new.

What is second-hand ?

500
They are the main reason why the planet is so polluted.

What are humans ?