1
when the Earth can continue to provide us with air, water and food
2
petrol and gas arre examples of these
3
the people who live in a place
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when we use something and we cannot do without it
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things we spray on plants or use to clean our houses
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petrol, gas, water and others are examples of these
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make more
8
in all the world
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make less
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when we spend a lot for no reason