No rain for long time , Drought, Flood, what happen to animal in drought ?, Stay in environment, Animal move to another place, In drought the land become, Dry, Wet, It happens when lightning strikes dry land and grasses, Drought, Fire, it happens when human made fire gets out of control, Fire, Pollution, Fire clean out dead plants on a forest floor, True, False, smoke from fire pollute ..., Air, Water, Heavy rains cover the dry land with alot of water, Drought, Flood, what cause plant wash away and animal move away, Flood, drought, flood bring new seeds and nutrients to the land, True, False, Volcanoes cause, Air pollution, Water Pollution, Throwing trash or chemicals into water cause, Pollution , Flood, happens by using machines that pollute the air, Drought, Pollution, when goats eat large quantities of grass it is called, Overgrazing, Subgrazing, Overgrazing is .............for the environment , harmful, useful, its commonly found on River Nie in Egypt, Sunflower plant, Water hyacinth, The spread of water hyacinth ......... the environment, Harm, useful.

theme2 chapter1lesson 3

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