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Waste brings problems. Waste can bring no problem. China is rich in fresh water. Students never waste things.
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doesn’t reach the amount for usage. is easy to be acquired and stocked. can be transformed into electrical power. can only be used in producing plastics.
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They will call for recognition of the pubic. They will protect energy from further losing. They have failed to properly preserve energy. They can recover useful things from waste products.
Their producing is cheap and simple. They can break down easily after usage. They aren’t as good as conventional plastics. They can only be acquired from solid waste.
can treat waste water with less by-products. will convert sugar into plastics much easily. can break away from waste treatment plants. will create more commercial plastic products.
without with except besides
How to make electricity from water. Plastics and environment protection. Waste water treatment and recycling. Waste classification and treatments.
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