Properties of Ocean Water!

Ocean water is a combination of freshwater and a variety of dissolved ions of salts and other trace elements. While local

differences in salinity and temperature of ocean water occur, the composition of seawater is fairly uniform around the globe, and

has been for a major period of geologic time. Salinity is a measure of the amount of dissolved salts in seawater, and is measured

in parts per thousand.

http://www.flinnsci.com/Documents/demoPDFs/EarthSci/ES10386.pdf

Global Warming

• Average temperatures have climbed 1.4 degrees Fahrenheit (0.8 degree Celsius) around the world since 1880, much of this in recent decades, according to NASA's Goddard Institute for Space Studies

 The rate of warming is increasing. The 20th century's last two decades were the hottest in 400 years and possibly the warmest for several millennia, according to a number of climate studies. And the United Nations' Intergovernmental Panel on Climate Change (IPCC) reports that 11 of the past 12 years are among the dozen warmest since 1850.

http://news.nationalgeographic.com/news/2004/12/1206_041206_global_warming.html