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Invasive Species

An invasive species is an organism that is not native to an ecosystem, and thus has no natural predators in that environment. This lack of predators often causes some wicked problems in the place it colonizes. With no predators, these invaders can out-compete local fauna and flora, and then disrupt the balance of the ecosystem. You might be wondering, how do these species get to their new location? Well, some are introduced purposely by humans, such as the European hare which was brought to Australia in the 1830s, and some are introduced by accident, like the emerald ash borer, which has wiped out native ash trees in the Midwest and the Eastern United States.

Explore the new worlds of these alien species with this collection of resources.

grades

6 - 8

subjects

Biology, Ecology, Geography, Physical Geography

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