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May 9, 2005: Oil and Food: A Rising Security Challenge
Countering the historical trend toward more energy-intensive farm mechanization has been the adoption of conservation tillage methods—leaving crop residues on the ground to minimize wind and water erosion and soil moisture loss. Soil quality is improved through this technique, while farm fuel use and irrigation needs ...
www.earth-policy.org

Eco-Economy Indicators: GRAIN HARVEST - Earth Policy Institute Resources on Food and Agriculture
Paving the Planet: Cars and Crops Competing for Land (14 February 2001) U.S. Farmers Double Cropping Corn and Wind Energy (7 June 2000) Falling Water Tables In China May Soon ... B Chapter 3 - Eroding Soil and Shrinking Grainland Soil Erosion: Wind and Water Advancing Deserts Crops and Cars Compete for Land The Land Hungry Soybean Grainland Gains and Losses Spreading Land Hunger Chapter 8 - ...
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Hooray Humans: the bible and our relationship with earth and animals
"This is good. This is good." Take Verse 21: "And God created great whales, and ... and exposing it to wind and water - causes erosion. In the early days, people weren't very good at ploughing, and so it was a matter of centuries, usually, before their topsoil ran out and ...
www.eco-action.org

Climate Ark: Regions and Countries/Australia Links
Added: Mar. 12, 2008 | Rate It Ozone ...
climateark.org

Alternative Policy Study: Alternative Policy Study: Land and Water Resources in Arab African Countries
Desertification can be caused by wind erosion, water erosion, salinisation or alkalisation, or by sand encroachment. Wind and water erosion are caused when the vegetation cover protecting the soil is damaged by deforestation or overgrazing. The exposed fertile topsoil is carried away by wind and water ...
grida.no

Water mills and hydro
Water mills and hydro Water Power and Hydroelectric Dams EOTECHNIC - PALEOTECHNIC Norse -- horizontal wheel, 1/2 h.p. Horizontal wheels would return in the hydroelectric period. Wind and water milling technology from China and India was an influence on European technology in the Middle Ages. Where animal and human power had ...
radford.edu

Freshwater Website: Informational Resources and Services (Glossary)
The manufacture by plants of carbohydrates and oxygen from carbon dioxide and water in the presence ... soil, alluvial, and rock materials; removed by erosion and transported by water, wind, ice, and gravity. sedimentation - The deposition of sediment from a state of suspension in water or air. ...
www.ec.gc.ca

Peak Oil and Permaculture
Investment An efficient, compact, passive solar home that catches its own energy and water is a great start to your ... the atmosphere (wind, convection & hydro) or plant growth (providing biofuels). Fossil fuels are finite and precious resources to be shared with future generations. Cities Our oil-driven economy and the ...
www.foodforest.com.au

Freshwater Website: Properties of water (Surface tension)
Some aquatic insects such as the water strider rely on surface tension to walk on water. Surface tension is essential for the transfer of energy from wind to water to create waves. Waves are necessary for rapid oxygen diffusion in lakes and seas. Water Properties Menu Previous ...
www.ec.gc.ca

Oceans Alive! | Oceans in Motion | Wind and Waves
Wind and Waves Water on the Move Wind and Waves Making Waves When you look at an ocean wave what do you think is happening in the water below the surface? Is the water ... and raise a small wooden block in and out of the water to create waves. How and where did the cork move? Energy in the form of waves move across the cork but the cork itself (and the water ...
mos.org