| A | B |
|---|
| What does a reservoir collect? | water |
| How can energy be preserved? | by using alternative energy resources |
| What produces geothermal energy? | heat in the earth |
| What type of energy uses the sun's energy directly? | solar energy |
| What organism makes most ofthe world's oxygen? | phytoplankton |
| What is an ore? | a rock that contains enough of a mineral to be valuable |
| What doesa scrubber remove from burning coal? | sulfur dioxide |
| What is a renewable resource? | a resource that can be replaced in a reasonable time |
| Name the forms of fossil fuels. | oil, coal, and natural gas |
| Where does carbon dioxide come from? | air |
| Where can tidal energy and fossil fuels be found? | in the oceans |
| Why is water a renewable resource? | it cycles in the environment |
| What happens when pollutants are put in the water? | they become diluted |
| What is conservation? | the careful use of any resource |
| Where are nodules found? | on the ocean floor |
| Make a list of nonrenewable resources. | coal, oil, and natural gas |
| What is a vent? | an opening in the ocean floor |
| Out of the following which is an ore: aluminum, coal, natural gas, bauxite | bauxite |
| Explain why oxygen is a renewable resource. | It is replaced by plants everyday. |
| Explain why krill may soon become an important food source for people. | Itis abundant and can be ground up to make a food item |
