behave, act in a certain way, carbon dioxide, the gas produced when animals breathe out, climate change, a permanent difference in the Earth’s weather conditions, consume, use things, like energy, time, food, flood, a very large amount of water that covers an area which is usually dry , global warming, a general increase in world temperatures caused by increased amounts of carbon dioxide around the Earth, recycle, process used objects or materials so that they can be used again, reproduce, when an animal or plant produces young animals or plants, challenge, something difficult that tests strength, skill or ability, chemical, a substance used in chemistry, die out, to disappear completely, especially for animals or plants, environmental damage, harm caused to the Earth, natural disaster, a sudden event which causes great damage or suffering, which was not directly caused by people, e.g. flood, storm, earthquake, natural resources, things that exist in nature and can be used by people, e.g. oil, trees, etc. , run out, use all of something and not have any more left, waste, unwanted materials or substances that are left after you  have used something.

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