Why? Answers to Everyday Scientific Questions - Tapa dura

Reseña del editor

Have you ever wondered: Why tides ebb and flow? Why humans need oxygen? Why volcanoes erupt? Why it rains? Why plants flower in the spring? Why there are 365 days in a year? From the weather to genetics, the plants to the elements, this title is suitable for anyone with a desire to understand better the mechanics of the world around them.