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The biosphere is the zone of air, land and water where organisms exist. It is commonly known as the global sum of all ecosystems and consists of several layers including the atmosphere, the lithosphere and the hydrosphere.
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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.

The biosphere is the global ecosystem, the sum of all of the planet's ecosystems. The biosphere includes the entire portion of Earth inhabited by life, ranging from the atmosphere to a height of several kilometers to the oceans and water bearing rocks to a depth of several kilometers.

To determine the extent of a possible protistan 'rare biosphere', Stoeck et al. [5] sequenced about 250,000 eukaryotic-specific V9 variable regions of the SSU rRNA. Previous surveys of these two anoxic environments were limited to Sanger sequencing of SSU rRNA clone libraries.

(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.
biosynthesis ...

~ 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.

~ and biodiversity
Main articles: ~, Biodiversity
For modern ecologists, ecology can be studied at several levels: population level (individuals of the same species), biocenose level (or community of species), ecosystem level, and biosphere level.

~ 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) ...

~: The geographical region of the Earth where life is found.
Bipedal: Two-footed posture and locomotion like a human standing upright on the hindlimbs.

In the Gaia hypothesis, James Lovelock stated that the entire mass of living matter on Earth (or any planet with life) functions as a vast homeostatic superorganism that actively modifies its planetary environment to produce the environmental conditions necessary for its own survival.

[edit] Biosphere
Main articles: Biosphere, Biodiversity, and Unified neutral theory of biodiversity ...

~ The earth and all of its ecological interactions considered as a single system.
~ 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.

A ~ is a set of all of the ecosystems of the planet.
10. What are autotrophic beings? What are heterotrophic beings?

~: Portion of the earth inhabited by life: sum of all ecosystems. This area is a relatively thin layer of seas, lakes, streams, land to soil depth of a few meters, and atmosphere to an altitude of a few kilometers.

Biomes BiosphereThe part of our planet in which life exists and with which it exchanges materials. Includes a small part of the lithosphere (the solid earth) and large parts of the hydrosphere (water) and atmosphere.

The UNESCO (United Nations Educational, Scientific, and Cultural Organization) biosphere reserves were established quite some time ago.

The Biology covers the study of all the living beings and their interactions into the biosphere.

Ecological systems are studied at several different levels, from individuals and populations to ecosystems and the biosphere.

The boundaries of the ecosystem studied are dictated by the individual carrying out the study. It may be as large as the biosphere or as small as an enclosed bacterial colony.
Understanding ecological terms
The following are important terms which are frequently used in ecology...

This text covers the concepts and principles of biology, from the structure and function of the cell to the organization of the biosphere. It draws upon the world of living things to bring out an evolutionary theme. The concept of evolution gives a background for the study of ecological principles.

KEGG: Kyoto Encyclopedia of Genes and Genomes: A grand challenge in the post-genomic era is a complete computer representation of the cell, the organism, and the biosphere, ...

An ecosystem includes all the living organisms in a certain area in addition to the nonliving parts of their environment, which usually includes many different communities. Finally, the highest level of organization is the biosphere-encompassing all the living things on Earth. Phew.

Wilson, Professor Emeritus and honorary curator of entomology at Harvard University, in his 2002 book The Future of Life (ISBN 0679768114), estimates that if current rates of human destruction of the biosphere continue, one-half of all species of life on earth will be extinct in 100 years.

In multicellular organisms, cells form tissues (example, muscle), tissues form organs (example, heart), and several organs function as an organ system (example, circulatory system). Organisms form populations, populations form communities, communities form ecosystems. The biosphere refers to all ...

See also: See also: What is the meaning of Organ, Plant, Animal, Environment, Life?

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