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.
Volcanoes come in all shapes and sizes. The more common types are shield volcanoes, stratovolcanoes, and cinder cones. Shield volcanoes gained their name from the fact that their profile against the horizon looks like a shield laying on the ground. The flanks of a shield volcano have low slopes, sometimes only a few degrees from horizontal. Shield volcanoes are the largest volcanic features on earth. The largest shield volcano, Mauna Loa in the Hawaiian Islands, has a volume 300 times greater than that of the largest stratovolcano, Mount Fuji in Japan.