1) Nonliving things like water, wind, etc... can change the environment. But living things can also cause changes. a) true b) false 2) is when small pieces of rock are carried away by water and sometimes by wind. a) Erosion b) drought 3) a large amount of water that covers normally dry land. It can happen very suddenly. a) Drought b) Flood 4) Fires can be caused by a natural event, like lightning. Fires can also be caused by people. a) True b) False 5) What causes a drought? a) No rainfall b) More rainfall 6) Pollution is  a) any harmful material added to the air, water, or land b) any useful material added to the air, w 7) Which is an example of how people can help an environment? a) Trees are planted in a forest b) Houses are build on a grassland 8) includes all living and nonliving things together in an area. a) Ecosystem b) No life 9) An organism that cannot adapt to changes in the environment will most likely - a) Live more and more b) May die

Science , grade 3

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