| A | B |
|---|
| surface water | found in lakes, streams, and rivers |
| ground water | collects in small spaces between bits of soil and rock |
| mining | process of removing ores froms the Earths crust |
| point source | pollution that can be traced to one source |
| ore | a mineral resource that can be mined at a profit |
| water | 70% of Earths surface is covered by this |
| clear cutting | removal of all trees in one area |
| select cutting | cutting a minimal selection of trees to reduce habitat destruction and erosion problems |
| individual trees are | renewable |
| entire forest areas | are nonrenewable |
| acid rain | formed from burning fossil fuels, gasses relesed and mixed with water nn the air |
| nonrenewable | resources that will take longer than 100 years to replace |
| hydroelectric | power formed from wterfalls and moving water |
| geothermal energy | geysersuses the magma and hot rocks beneaths Earth's surface |
| nuclear energy | produced by the splitting of nuclei of certain elements |
| wind farms | many windmills located in one area to generate power |
| fossil fuels | energy resources formed form the ancient decayed organisms |
| renewable resources | can be recycled or replaced in less than 100 years |
| solar cells | change light into electricity |
| solar energy | energy from the sun |
| sun | most abundant untapped energy resource on Earth |
