Chapter 4 - Ecosystems in Balance main content.

Chapter 4 - Ecosystems in Balance




Unit B - Where Plants and Animals Live

Chapter 4 - Ecosystems in Balance

Examine how organisms compete and adapt in their environments and the effects that changes to an ecosystem have on the plants and animals that live there.

Article Going Going Gone Today, species are becoming extinct—disappearing from our planet—at a faster rate than ever before. What's behind this increase,... Educator Materials 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... Video They Glow! Most of the deep sea is very dark, with little or no sunlight. But that doesn't mean marine animals are in the dark! Learn how these... Interactive Bio-Benefits Can you imagine living on a planet without biodiversity? What in the world would you wear—or eat? See how biodiversity gives us many... Article 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... Educator Materials Water vs. Land Brainstorm with your students a list of things that are possible in water that are not possible on land, and vice versa. Educator Materials Crazy Camouflage Unlike humans, some animals can instantly change the color or pattern of their skin. Take a hands-on look at how the masters of disguise... Educator Materials Create a Polar Creature Ice floes, katabatic winds, and subzero temperatures—welcome to life in Antarctica. What features would your ideal creature have... Article Poison-Dart Frogs: Nature's Touch-Me-Nots For centuries, Latin America's poison-dart frogs have helped hunters capture their prey. Today, they're also helping scientists combat... Educator Materials Reefs in Crisis Humans have harmlessly harvested coral reefs for thousands—or even hundreds of thousands—of years. So why has our behavior in recent... Article Exploring a Woodlot's Ecosystem Chances are you've heard the saying "There's no such thing as a free lunch." But did you know that it's one of fundamental...