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The zone of the atmosphere that is immediately adjacent to the earth’s surface?

Compensation for destroying a site by purchasing or creating one of more or less equal ecological value somewhere else?

This sort of heterotroph feeds on plants and animals?

Who was the first head of the U.S. Forest Service? 

One of the major consequences of climate change is?

This is caused when volatile compounds evaporate in warm areas, then condense and precipitate in cooler areas after being carried by the wind?

Deposition of particles of rock, transported by wind, ice, water and gravity until they reach a new location?

Deposition of wet acidic solutions from the air?

This killed the dinosaurs?

This is caused by air sinking?