Some species, such as wild pigs, can completely change an ecosystem.

Select the correct words from the drop-down menus to complete a description of how wild pigs change the ecosystem.

Wild pigs are a(n)
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that were introduced from Europe. They eat almost everything and
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native wildlife for food resources. The pigs also destroy
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, another food source, as they trample over the land. They have no natural
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, and females reproduce about ten times in their lifetimes.

Wild pigs are a(n) invasive species that were introduced from Europe. They eat almost everything and compete with native wildlife for food resources. The pigs also destroy vegetation, another food source, as they trample over the land. They have no natural predators, and females reproduce about ten times in their lifetimes.