Where are some of the world's major active volcanoes? - Answers
World's major active volcanoes - A volcano is a rupture in the earth's surface, on the crust layer, that allows the escape of lava, volcanic ash and gases from a magma chamber in the earth's inner layers. World map showing active volcanoes around the world.
Biology Basics: Matter Cycling within Ecosystems - dummies
Carbon Cycle Diagram-Organisms in biological ecosystems connect to one another through their need for matter as well as energy. Every organism needs molecules like proteins, carbohydrates, and fats to provide the raw building materials for their cells. One of the most fascinating facts about Earth is that almost all the matter on the planet today has been …