Greenhouse Effect

INSERT A PREPOSITION:

Not long ago the talking ________ weather was mostly just small talk, but these days it's taking a more serious turn. There's something ______ the air.
You can't see it, most of the time you can't feel it, but air _______ us is changing ____ a quiet, but dramatic way.
The way we live is changing the composition ____ the atmosphere and our climate and local weather pattern are changing ______ it.
We burn fossil fuels to produce energy: coal, oil and natural gas and it's increasing the carbon dioxide _____ the atmosphere.
This process is raising the temperature _____ the planet. We call this warming action greenhouse effect.

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