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Chapter 4 - Changes in Ecosystems

life_science

 

 

Unit B - Ecosystems

  • Chapter 4 - Changes in Ecosystems

How can changes affect living things and their environments

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Hands-on Activity

Endangered Species Game

Roll snake eyes, and you're on your way to survival. Land on the extinct box, though, and you're gone. Kaput. Finis. In this board game, your very survival is at stake! 

Saving-Species

Story

Saving Species

Take a world-wide tour of biodiversity. You'll meet mollusks in the reefs off the Bahamas, the aye-aye in the tropical forests of Madagascar, and the clever mimic-ant spider that lives in Australia.

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Story

Going Going Gone

Today, species are becoming extinct—disappearing from our planet—at a faster rate than ever before. What's behind this increase, and what can be done to slow or stop it? 

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Article

Fighting Dinos

About 80 million years ago in the Gobi Desert, two dinosaurs were locked in deadly combat when they were suddenly buried alive. See what's been called one of the greatest fossil specimens ever found. 

Beyond-T.-rex

Interactive

Beyond T. rex

Only a small fraction of the 400-plus known species of extinct dinosaurs have appeared on TV and movie screens. Meet some of the more unusual members of T. rex and Velociraptor's family tree.

Face-to-Fossil

Story

Face to Fossil

Join the inquisitive Deena Soris as she interviews the fossil of a Protoceratops. This dashing dino, dug up in Mongolia in the 1920s, offers insight into his former life—and the secrets he's still keeping. 

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Curriculum Materials

Body and Trace Fossils

What kind of fossil is a tooth—body or trace? How about a nest of eggs? Or a skin impression? Examine the differences between body and trace fossils with these eight high-quality photographs.

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Story

What's the Big Idea About Paleontology?

Most living things never become fossils. And most of the fossils created will never be found. Learn more about these extremely rare—and valuable—records of the past. 

Meet-the-PaleontOLogists

Story

Meet the PaleontOLogists

If you dig dinosaurs, then you need to meet these OLogists. Find out what cool stuff Anna, Max, Reva, and Mark have uncovered while following their curiosity. 

Going-Gobi

Story

Going Gobi

Who would travel halfway around the world to spend the summer in a desert where brutal sandstorms and surprise flash floods are on the itinerary? Meet Mike and Mark, who've made the trek annually since 1990. 

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