Earth''s Resources
Before You Read
Earth''s Resources
Section l：Renewable Resources
Section 2：Nonrenewable Resources
Section 5：The Problem with Energy Production
Focus on genre Reading an Encyclopedia Entry
Geothermal Energy
Section 4：Energy Conservation
After You Read
Glossary
Understanding Natural Resources
Before You Read
Understanding Natural Resources
Section 1：Natural Resources around Us
Section 2Energy and How We Use It
Focus on genre Reading an Encyclopedia Entry Pollution
Section 5：Conserving Energy
After YoU Read
Glossary
Using Natural Resources
Before You Read
Using Natural Resources
Section 1Our Precious Natural Resources
Section 2：Nonrenewable Resources Produce Energy
Focus on genre Reading an Encyclopedia Entry Mining：
Section 5：Renewable Resources Produce Energy
After You Read
Glossary
Heating up
Before You Read
Heating up
Section 1：Energy in Motion
Section 2：Heat Makes Molecules Move
Section 3：What is Heat?
Section 4：How Heat Transfers
Focus on genre Using a Web Site Ultraviolet Radiation
After You Read
Glossary
Heat Around us
Before You Read
Heat Around us
Section 1：Heat Energy
Section 2Temperature Measures Motion
Focus on genre Using a Web Site Temperature Scales：
Fahrenheit and Celsius
Section 5：The Give and Take of Heat Transfer
After You Read
Glossary
Understanding Heat
Before You Read
Understanding Heat
Section 1：Heat Around Us
Section 2：Heat and Molecule Movement
Section 3：Heat Transfer
Section 4：Heat and Chemical Reactions
Focus on genre Using a Web Site
Exploring Chemical Reactions
After You Read
Glossary
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