<span>evaporation and runoff
</span>The answer is A
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Ecological tipping points are the<span> points where environmental problems reach threshold level causing irreversible shifts in the behavior of natural systems. These are also called thresholds where the biodiversity changes.</span>
<span>A. Biosphere
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Answer:
North American Free Trade Agreement
The United States–Mexico–Canada Agreement is based on the North American Free Trade Agreement (NAFTA) which originally came into effect on January 1, 1994.
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Answer:
basically very cold areas
