Reduce, reuse, recycle. These are typically known as the three R's of the environment. Every year, Americans throw away billions of containers and other packaging materials that end up in landfills. Reducing the amount of waste you produce is one way to help the environment. Another way to help the environmentis to recycle. Many of the things we use every day, like paper bags, soda cans, and milk cartons, are made out of materials that can be recycled. Recycled items are put through a process that makes it possible to create new products out of the materials that come from the old ones.Reusing is another way to help protect the environment. The idea is simple: instead of throwing things away, try to find ways to use them again. The use of grey water to irrigate plants is an example. Grey water is the water produced by showering, cleaning clothes, washing dishes, etc. It does not include human waste (that is called black water, and is not safe to use for irrigation). Clearly, if grey water is to be used for growing plants, the kinds of detergents used in the house will have to be eco-friendly. In other words, the detergents used should cause little or no environmental damage.If water is to be successfully reused to irrigate plants, it is critical that the reused water not be harmful to worms and other creatures that are important for the health of the soil. In this environmental science fair project, you will compare the toxicity of "green" (those asserting they are environmentally friendly) and conventional dishwashing detergents by measuring their effects on worms
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