DDT is used to repel and kill disease carrying mosquitos <span />
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Extreme, or severe weather are used interchangeably to describe weather that causes harm to people and/or property. Types of extreme weather include: Thunderstorm - a rain shower with lightning and thunder. ... Flash flooding - rapid flooding due to heavy amounts of rainfall in a short period of time.
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Pollution is always a good way to go but you don't have to do air pollution you can do water pollution or both air and water pollution.
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I think the answer would be lichens, because lichens are formed during primary succession as a pioneer species. During secondary succession, grasses are usually the pioneer species.
Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. Random mutations are the initial cause of new heritable traits. For example, a rabbit can't choose to have a different fur color.
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