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The hole in the ozone _____________lets UV lights into the atmosphere.

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Individually wrapped candy or chocolate causes a lot of trash, __________fruits and vegetables are healthier and mean less waste.

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Sometimes it’s better not to buy something new, and buy ________one instead.

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Fossil fuels which are non-renewable pollute the air and cause air _______.

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If wastes are thrown ____________, they can cause pollution in water, land and air.

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Trees not only bring nature to urban areas, but they also help clean the air by absorbing pollutants, ______oxygen, ______water, and growing food.

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Air pollution is such a serious ________that it has been a direct factor in the ______of millions of people each year.

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You should use electric fans instead of air conditioners _______they don’t emit dangerous gases.