Provides answers to such questions about trees such as "How do trees grow?", "How do trees change with the season?", and "How do leaves make food for the tree?"

This book provides answers to such flight-related questions as "How do airplane wings work?", "What is thrust?", and others.

Provides answers to such questions about the weather as "What is the atmosphere?" , "How does water get into the clouds?", "What makes lightning happen?", and "What is the water cycle?"