In the cloud forests of the Amazon Basin, scientists are installing extraordinary numbers of camera traps in the hopes of learning more about an elusive species-woolly monkeys. No one knows for...
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Auteur: Markle, SandraSommaire: -
Auteur: Bullard, LisaSommaire:
Earth has a water problem. People need water to live. But only a little of Earth's water is usable. How can you help? Join Trina to find out how to care for Earth's water. Do your part...
Genre: Juvenile nonfiction, Math and science -
Auteur: Boothroyd, JenniferSommaire:
A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. But what exactly is gravity? And how does it affect different objects? Read this book to find out! Learn all...
Genre: Juvenile nonfiction, Math and science -
Auteur: Boothroyd, JenniferSommaire:
A baseball player slides on the ground to tag a base. A toy car's wheels rub against the floor and slow the toy car down. Friction is at work all around you. But what exactly is friction? And...
Genre: Juvenile nonfiction, Math and science -
Auteur: Johnson, Rebecca L.Sommaire:
The digestive system is made up of the tongue, the esophagus, the stomach, the intestines, and other parts. But what does the digestive system do? And how do its parts work together to keep your...
Genre: Juvenile nonfiction, Math and science