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10 kilo afvallen met BCM lifestyle |
Biosphere | |
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| Biosphère, Environment Museum |
| Biosphere 2, under the management of The University of Arizona, is one of the world's most unique facilities dedicated to the research and understanding of global scientific issues. |
| The term "Biosphere" was coined by Russian scientist Vladimir Vernadsky in the 1929. The biosphere is the life zone of the Earth and includes all living organisms, including man, and all organic matter that has not yet decomposed. Life evolved on earth during its early history between 4.5 and 3.8 billion years ago and the biosphere readily distinguishes our planet from all others in the solar system. The chemical reactions of life (e.g., photosynthesis-respiration, carbonate precipitation, etc.) have also imparted a strong signal on the chemical composition of the atmosphere, transforming the atmosphere from reducing conditions to and oxidizing environment with free oxygen. The biosphere is structured into a hierarchy known as the food chain whereby all life is dependent upon the first tier (i.e. mainly the primary producers that are capable of photosynthesis). Energy and mass is transferred from one level of the food chain to the next with an efficiency of about 10%. All organisms are intrinsically linked to their physical environment and the relationship between an organism and its environment is the study of ecology. The biosphere can be divided into distinct ecosystems that represent the interactions between a group of organisms forming a trophic pyramid and the environment or habitat in which they live. |
Exploratorium - The effects of climate change on plants and animals are difficult to measure, but potentially dramatic. Many species inhabit precisely bounded ecological niches, and even small changes in climate may cause fundamental disruptions in habitat or food availability. In the past, animals could respond to these pressures by moving from one place to another. Today, however, land development has constrained and fragmented ranges and travel routes, making species migration in response to climate change much more difficult. Moreover, loss of key predator or prey species may affect the life cycles of other organisms in the food chain. | |
Biosphere Expeditions - Our conservation holiday volunteer work expeditions are not about playing the primitive, open to all, there are no special skills or fitness required to join and there are no age limits whatsoever. With Biosphere Expeditions you can be a wildlife and environmental volunteer for anything from two weeks to several months and at least two-thirds of your expedition contribution will go locally directly into the conservation project, funding it long-term and sustainably. We always work with local scientists and people from the host country, teams are small and an expedition leader from Biosphere Expeditions will be by your side. | |
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