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.
The 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.
To determine the extent of a possible protistan 'rare ', Stoeck et al.  sequenced about 250,000 eukaryotic-specific V9 variable regions of the SSU rRNA.
biosphere All ecosystems on Earth as well as the Earth's crust, waters, and atmosphere on and in which organisms exist; also, the sum of all living matter on Earth.
(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.
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.
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, ...
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) ...
: 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 ...
Main articles: , Biodiversity, and Unified neutral theory of biodiversity ...
The first three items on this list (atoms, molecules, and macromolecules) will be discussed further in the chapter on chemistry.
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.
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.
Studies by taphonomists (paleontologists who study the transition of animals from the to the lithosphere; taphonomy literally means "burial laws") have shown that organisms that die on land in lush jungle locales are rarely fossilized.
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 .
Ecological systems are studied at several different levels, from individuals and populations to ecosystems and the biosphere.
This text covers the concepts and principles of biology, from the structure and function of the cell to the organization of the . It draws upon the world of living things to bring out an evolutionary theme.
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 ...
Biota: The plants and animals of a specific region or period, or the total aggregation of organisms in the .
More Biology Terms ...
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 -encompassing all ...
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, ...
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 ...
See also: Organ, Animal, Plant, Environment, Life