I wonder why

A collection of questions and answers about the oceans including "What is sand made of?" and "Which sea animals sing like canaries?".

Answers a wide variety of questions about the invention of common household items.

Questions and answers about how people lived and worked in ancient Egypt.

Provides the answers to thirty-one questions about mosquitoes, bees, grasshoppers, and other insects and spiders.

Information about the life cycles of various animals, plants, and insects is presented in a question and answer format.

Provides answers to over thirty questions about dinosaurs, discussing how many dinosaurs there were, which of them went fishing, what they ate, how fossils are found, and other topics.

Questions and answers explore the world of plants, covering such aspects as leaves, roots, stems, seeds, and fruit.

Answers such questions about reptiles as why do snakes stare, are frogs and newts reptiles, and which reptile lives longest.