The spread of an unwanted pest into a new area is often called an invasion.

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Study for the GMAS 8th Grade Social Studies Test with focused flashcards and multiple choice questions complete with hints and explanations. Get ready to excel!

Multiple Choice

The spread of an unwanted pest into a new area is often called an invasion.

Explanation:
When a species, such as an unwanted pest, moves into a new area and begins to establish itself, that situation is called an invasion. Invasion describes the arrival and spread of organisms into places where they are not native, often causing ecological or economic problems as native species are affected. The other words refer to unrelated ideas: ally means a friend or partner, drought is a long period without rain, and installation is the act of putting something in place. So invasion is the precise term for the spread of a pest into a new area.

When a species, such as an unwanted pest, moves into a new area and begins to establish itself, that situation is called an invasion. Invasion describes the arrival and spread of organisms into places where they are not native, often causing ecological or economic problems as native species are affected. The other words refer to unrelated ideas: ally means a friend or partner, drought is a long period without rain, and installation is the act of putting something in place. So invasion is the precise term for the spread of a pest into a new area.

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