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Chapter 4 - Ecosystems in Balance

life_science

 

 

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.

water vs land_thumb

Hands-on Activity, Classroom Activity

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.

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Activity

Create a Polar Creature

Ice floes, katabatic winds, and subzero temperatures—welcome to life in Antarctica. What features would your ideal creature have to thrive in this extreme habitat?

Red Frog

Young Naturalist Awards Essay

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 disease. Take a close (safe!) look at these vividly colored frogs with this 15-year-old student.

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Online Resource, Article

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 years suddenly put reefs at risk?

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