Habitat loss is having a huge effect on Earth's plants and animals. When habitats are lost, so are ecosystems. Humans need healthy ecosystems for clean air and water, for medicines and for our emotional well-being. Many people are working hard to restore and preserve habitats. Find out what you can do to keep Earth healthy, too.Level 3 readers are aimed at children who are reading by themselves and can grasp new concepts. Key words and captions help readers understand new vocabulary and more challenging sentence structure.This project has been made possible in part by the Government of Canada.