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| moving water, wind, and moving ice pick up and carry soil and other materials in a process known as |
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| What causes the most erosion on earth? |
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| materials such as soil and gravel that are carried by moving water, wind, or moving ice are called |
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| rocks are broken into smaller pieces by the process of |
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| a large mass of ice that forms over land |
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| piles of sand deposited in one place by the winds |
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| What is similar to a dump except it is built to keep trash from harming the environment? |
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| What happens when people, factories, or machines add unwanted materials to the air, water, or land? |
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| Recycling what material reduces the number of trees that are cut down? |
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| fresh water, trees, and plants are examples of what kind of resources? |
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| material that was once living organisms that has been broken down by decomposers |
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| bits of rock, animal material, and plant material makes up what? |
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| a nonliving material from the earth with a definite structure, such as quartz |
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| planting trees or other plants |
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| What is one of the main things people can do to prevent erosion? |
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| What is the name of the landform that is a deep, narrow valley that often has a stream or river running through it? |
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| What is a good way to help conserve natural resources? |
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| Scientists observed a stream eroding a steep area over many years. What landform will most likely develop if this process continues? |
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| What is created when sediments are deposited where a river meets a larger body of water? |
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| Where will you find a sand dune? |
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| river's end or mouth or where a river meets a larger body of water |
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| Where will you find a delta? |
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| Both are caused by moving sediments. |
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| How are a delta and dune alike? |
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