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Unscramble the words, using the sentences for clues.
_________ energy comes from the sun.
Renewable energy sources include _________ , sun and falling water, and can never be used up.
3. SUE ESLS
To conserve means to _____ _________ of something or to use it more carefully so it lasts longer.
Your conservation efforts make your home more _________-efficient.
Global warming means that the Earth is getting too warm because certain gases in the air trap _________from the sun.