What were the early photosynthetic bacterial colonies that pumped oxygen into the
atmosphere?...
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Geography, 21.06.2019 23:10
What group has historically made up the largest portion of immigrants in mexico?
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Geography, 22.06.2019 17:00
Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals
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Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.
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Geography, 23.06.2019 20:50
In 2002, north korea announced that it was shutting down its nuclear facilities constructing a hydroelectric energy plant restarting nuclear weapon development changing to a free market economy
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