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Definition of biosphere :
The ecosystem of the entire planet.
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The biosphere is the sum of all living matter on the Earth. Highly specialized organisms have adapted to the extreme boundaries of the uppermost atmosphere and lowermost ocean depths.
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biosphere: the blanket of living things that surrounds the substratum of the earth.
blastocyst: a hollow ball of cells resulting after the morula has passed through the Fallopian tubes and enters the female uterus.
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Biosphere and biodiversity
Main articles: Biosphere, Biodiversity, Unified neutral theory of biodiversity ...
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biosphere
(by-oh-sfeer) [Gk. bios, life + sphaira, globe]
The entire portion of Earth that is inhabited by life; the sum of all the planet's communities and ecosystems.
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Biosphere and biodiversity
Main articles: Biosphere, Biodiversity, and Unified neutral theory of biodiversity ...
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Biosphere all the living organisms on Earth
(bios = life; sphere = a ball)
Biotin a B vitamin related to vitamin B2 and formerly called vitamin H
(bios = life) ...
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biosphere reserves World heritage sites identified by the IUCN as worthy for national park or wildlife refuge status because of high biological diversity or unique ecological features.
biota All organisms in a given area.
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Biosphere
: The geographical region of the Earth where life is found.
Bipedal ...
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The UNESCO (United Nations Educational, Scientific, and Cultural Organization) biosphere reserves were established quite some time ago.
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Despite their diversity, centrality to life, and abundance on earth, microorganisms represent a substantial gap in our understanding of the biosphere because most knowledge of microorganisms has been derived from cultured organisms, ...
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Water is the common link among the five biomes and it makes up the largest part of the biosphere, covering nearly 75% of the Earth's surface. Aquatic regions house numerous species of plants and animals, both large and small.
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Three processes are responsible for most of the nitrogen fixation in the biosphere:
atmospheric fixation by lightning
biological fixation by certain microbes — alone or in a symbiotic relationship with plants
industrial fixation ...
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Biota: The animal and plant life of a given region.
Biota: The sum total of the living organisms of any designated area.
Biota: The plants and animals of a specific region or period, or the total aggregation of organisms in the biosphere.
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Ecological systems are studied at several different levels from individuals and populations to ecosystems and biosphere level. Ecology is a multi-disciplinary science, drawing on many other branches of science.
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