EESA10H3 Lecture : with information from lecture slides + information added by prof during lecture
Document Summary
The earth is a water planet; water covers about 71% of the surface, most of which is salt water: salt water limits its usage and makes it more expensive. No species can do without water: 60% of the human body is water. Water sculpts the earth"s surface; changes the shape of the earth (soil erosion, soil movement, rain, etc) Water helps to moderate climate; more water = milder climate. Water contains minerals, ca, na, k, etc. needed by humans: pure water is not good, stripped of minerals which are needed (distilled water is bad to drink) Groundwater: naturally filtered, contains less organic matter, often does not need any treatment www. notesolution. com. Difference between contaminants and pollutants: contaminants are any agents that can be found in water, soil, or any medium in the air around you, don"t necessarily cause harm, pollutants always cause harm to our health.