Saving Our Living Earth

Nearly all living things depend on Earth's land and its resources to survive. But did you know that people do many things that hurt the land? The damage sometimes destroys forests, which are home to diverse ecosystems and are important in producing oxygen and water. And in many parts of the world, damaged land produces less food, less wood, and less of many things that people need. We must join together in the quest to find better ways to use and take care of Earth's land. With engaging text and eye-catching images-plus a special Going Green section-this book tells you all about Earth's land and what you can do to protect it.

From roaring oceans to trickling streams, water covers seventy percent of our planet! But did you know that less than one percent of Earth's water is usable by humans? Most water on Earth is salt water. It can't be used for drinking, bathing, or growing plants. We need freshwater. Yet about two-thirds of Earth's freshwater is frozen solid at the North and South Poles. And the water we can access-from lakes, rivers, streams, wetlands, or underground sources-is in danger of being polluted. There is not enough water to waste. We must join together in the quest to protect this valuable resource. With engaging text and eye-catching images-plus a special Going Green section-this book tells you all about Earth's water and what you can do to protect it.

Every living thing on our planet needs air to survive. Most of the time, we hardly even think about Earth's air. But did you know that many of the things we use every day-from cars to electricity-hurt the quality of our air? The pollution in the air can make people, plants, and animals sick. We must join together in the quest to improve Earth's air quality. With engaging text and eye-catching images-plus a special Going Green section-this book tells you all about Earth's air and what you can do to protect it.

From brilliantly colored birds and wild elephants to towering trees and exotic flowers, rain forests are home to more than half of Earth's plants and animals. People living in rain forests depend on this vast array of life, and Earth itself relies on the world's rain forests to keep our climate and atmosphere in balance. But rain forests around the world are under threat. Once rain forests covered nearly 14 percent of Earth, but now they have shrunk to less than half that size. People around the globe are joining the quest to save rain forests. With engaging text and eye-catching images-plus a special Going Green section-this book tells you all about Earth's rain forests and what you can do to protect them.