| Question | Answer | |||
|---|---|---|---|---|
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the flying or operating of airplanes
|
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economic activity around one are of business
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a period of 10 years
|
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materials such as coal, gas or oil that is burned to produce heat or power
|
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not wasting a resource and using it to get the most benefit from it
|
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totally disapper
|
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to a greater degree tan normal, unusally
|
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producing no greenhouse gases
|
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doing a fair share of work
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