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Earth's outer core is a fluid layer about 2,260 km (1,400 mi) in height (i.e. distance from the highest point to the lowest point at the edge of the inner core) [36% of the Earth's radius, 15.6% of the volume] and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle.
The mesosphere is the third highest layer of Earth's atmosphere, occupying the region above the stratosphere and below the thermosphere. It extends from the stratopause at an altitude of about 50 km (31 mi; 160,000 ft) to the mesopause at 80–85 km (50–53 mi; 260,000–280,000 ft) above sea level.
There are at least 108 mountains on Earth with elevations of 7,200 m (23,600 ft; 4.5 mi) or greater above sea level. Of these, 14 are more than 8,000 m (26,000 ft; 5.0 mi). The vast majority of these mountains are located on the edge of the Indian and Eurasian plates in China, India, Nepal, and Pakistan.
Earth system science. An ecological analysis of CO. 2 in an ecosystem. As systems biology, systems ecology seeks a holistic view of the interactions and transactions within and between biological and ecological systems. Earth system science ( ESS) is the application of systems science to the Earth.
Kingdom (biology) The hierarchy of biological classification 's eight major taxonomic ranks. A domain contains one or more kingdoms. Intermediate minor rankings are not shown. In biology, a kingdom is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called Phylum.
The Dialogue Concerning the Two Chief World Systems ( Dialogo sopra i due massimi sistemi del mondo) is a 1632 Italian-language book by Galileo Galilei comparing the Copernican system with the traditional Ptolemaic system. It was translated into Latin as Systema cosmicum [1] ( Cosmic System) in 1635 by Matthias Bernegger. [2]
The history of Earth is divided into four great eons, starting 4,540 mya with the formation of the planet. Each eon saw the most significant changes in Earth's composition, climate and life. Each eon is subsequently divided into eras, which in turn are divided into periods, which are further divided into epochs . Eon.
e. World-systems theory (also known as world-systems analysis or the world-systems perspective) [3] is a multidisciplinary approach to world history and social change which emphasizes the world-system (and not nation states) as the primary (but not exclusive) unit of social analysis. [3] World-systems theorists argue that their theory explains ...