noun, Ecology. 1. a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment. 2. any system or network of interconnecting and interacting parts, as in a business: The success of Appleâs ecosystem depends on hardware/software integration.
Two Types of Impact Craters. Impact craters can be categorized in one of two ways: simple or complex. A simple crater has a smooth bowl shape small with a small depth to diameter ratio. This ratio is typically 1:6 which means that if the crater is 1 m deep, it is 6 m wide.
The Four Types of Volcanoes. Volcanoes are grouped into cinder cones, composite volcanoes, shield volcanoes and lava domes. Cinder cones are circular or oval cones (left) made up of small fragments of lava from a single vent that have been blown into the air, cooled and fallen around the vent.