1. Which is more dense: ocean water or fresh water, & why?
Ocean water is more dense that fresh water. Ocean water is more dense because of the salt in it. and the temperature, it gets more dense as temperature goes down.
2. How would global warming change water at the poles and the equator?
Warmer temperature could increase the amount of water vapor that enters the atmosphere. The result is a hotter, more humid environment. At the equator, changes are not expected to be large.
SOURCE: http://www.oceanographers.ru/podcast/wp-content/uploads/2008/11/antarctic_bottom_water_hg.png
SOURCE: http://www.nasa.gov/images/content/219452main_PIA10362-516.jpg
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