Let’s look at aluminum, for example. Aluminum mineral is so expensive to mine that recycling aluminum more than pays for itself. Burning it produces no energy. So clearly, aluminum is valuable to recycle and not useful to burn.

　　Paper, on the other hand, can either be burned or recycled—it all depends on the price the used paper will bring.

　　Plastics are another matter. Because plastics are made from petroleum and natural gas, they are excellent sources of energy for waste-to-energy plants. This is especially true since plastics are not as easy to recycle as steel, aluminum, or paper. Plastics almost always have to be hand sorted and making a product from recycled plastics may cost more than making it from new materials.

　　To burn or not to burn is not really the question. We should use both recycling and waste-to-energy as alternatives to landfilling.

　　Waste to Energy—JUST BURN IT!

　　WHY BURN WASTE? Advantages of waste to Energy ◆Though at a high (71) _______, waste-to-energy plants can produce enough electricity for 2.4 million US

　　households.

　　◆Burning waste can (72) _______ a considerable amount of trash going to landfills.

　　(73)_______ for landfilling

　　◆Some communities (74) _______ land for new landfills.

　　◆Most people refuse to build landfills around.

　　◆Building landfills in far-away areas will increase the cost of (75) _______ garbage.

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