A shopper walks eastward 3.2 meters and then westward 7.2

meters.

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

In an experiment, how can i change human errors? be specific.