Did You Know?
... extinct species are species that no longer exist on Earth.
... that non-native species can threaten native species.
... that some scientists believe that dinosaurs became extinct because a meteorite hit the Earth.
What Do You Think?
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NatureFiles
Learn more about some animals that are endangered or threatened species.
Teacher's Guide
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Image Credits: Clipart.com
The Earth has lots of different environments that support animal and plant species. Changes in an environment can have a negative impact on certain species ability to survive. When that happens plant and animal species can become endangered or even extinct.