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We get the energy we require for our everyday needs from many sources, but not all of them are ______.

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If tourists ______ rubbish in the river, the water would be cleaner.

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Bring a raincoat with you ______ it rains.

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

Choose the phrase which is closest in meaning to the underlined phrase in the following sentence.

My mom always helps me to keep those plants alive. She definitely has green fingers.

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Recycling provides a method of reducing the amount of waste materials that gets to the landfills – thus ______ it less probable for environmental pollution to take place.

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If we banned plastic, what ______?

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