4.7 purification of substance
Power point presentation
Earth's Hydrosphere and Water Pollution
Hydrosphere Presentation
Kathlyn Jacobe
14001505007 ppt (2).ppt
Chapter 14 Water. Aquifers: Porous, water-saturated layers of sand, gravel, or bedrock that can yield an economically significant amount of water.
The Hydrosphere Ch. 4, Sec. 2. Water for Agriculture: Irrigation: –Artificial watering of crops.
Atoms & Elements The building blocks of matter. Early Atomic History There have been many different theories, reflecting different times and cultures,
