| A | B |
|---|
| natural resource | any useful material found in the environment |
| raw materials | resources that must be altered, or changed, before they can be used |
| recyclable resource | a resource that cycles through natural processes in the environment |
| renewable resource | a natural resource that the environment continues to supply or replace as it is used |
| nonrenewable resource | a resource that cannot be replaced once it is used |
| fossil fuel | any one of several nonrenewable resources such as coal, oil, or natural gas created from the remains of plants and animals |
| manufacturing | the process of turning raw materials into a finished product |
| developed nation | a country with amodern industrial society and a well-developed economy |
| developing nation | a country with relatively low industrial production, often lacking modern technology |
| acid rain | rain whose high levels of chemicals can pollute or damage the environment (usually caused by the burning of fossil fuels) |
| recycle | to reuse materials to make new products |
