778 chapter 29 environmental health turning off

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778 Chapter 29 Environmental Health Turning off lights saves electricity. How else can you reduce electricity use in your home? Putting on an extra layer of clothing instead of turning up the heat helps conserve natural resources. Why is it important to conserve natural resources? HS_HEALTH_U09_C29_L3 12/8/03 6:13 PM Page 778
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Precycling and Recycling Programs he easiest, most cost-efficient way of conserving natural T resources is reducing the quantity of waste. Precycling and recycling are two ways of accomplishing this goal. Precycling reducing waste before it is generated —means pur- chasing and using products wisely. How can you precycle? Reduce your use of products that are used once and then discarded. For example, try using cloth napkins instead of paper ones. Purchase products in bulk or in the largest package appropriate for your use to reduce excess packaging. Buying products such as laundry deter- gent or fruit juice as concentrates also reduces packaging. Choose products designed to be recycled. For example, look for the code on plastic packages. Those that carry a 1, 2, or 3 are most easily recycled. Precycling also involves reusing materials. Reusing paper or plas- tic shopping bags or carrying your own cloth bags is a form of pre- cycling. So is donating unneeded household goods or clothing to charities instead of discarding them. Recycling is the processing of waste materials so that they can be used again. Recycling has several benefits: Recycling conserves resources. Both energy and raw materials are conserved by recycling. For example, making a can from recycled aluminum takes only 10 percent of the energy needed to make a new can from raw materials. Recycling reduces reliance on landfills. Landfill space is limited, and it cannot keep up with increas- ing demands. Because of this, it is important to reduce the amount of waste that gets deposited in landfills. Recycling protects environmental health. Recycling utilizes materials that might otherwise harm the environment if disposed of in landfills. Thus recycling efforts lead to a cleaner and more healthful environment. Recycling Precycling 779 Lesson 3 Advocating for a Healthy Environment Carrying your own cloth bags instead of using paper or plastic ones is one way to precycle. What is another example of precycling?
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TIPS FOR RECYCLING AND REDUCING WASTE More than 80 percent of household waste can be recycled. The following are some guidelines for specific recyclable materials. Aluminum. Rinse cans and other aluminum items such as pie pans and frozen food trays. Crush them to save space. Cardboard. Flatten cardboard boxes and tie them together. Glass. Rinse all glass containers. Recycle metal lids separately. Plastics. Look for the code on the container. Most recyclers take plastics marked with a 1, 2, or 3.
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