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Let's hope for some good _______.
Global warming constitutes towards _______ change.
The earth's __________ is one-fifth oxygen.
________ is where you twist or turn something round.
A _____________ studies the weather.
Ecology includes the study of how animals relate to their ___________.
_____________ is the water falling from the sky as rain, hail, sleet or snow.
________ is the amount of moisture in the air.
The ___________ in the desert was over 40 degrees.
________ is the weight of air pressing down on the Earth's surface.