microbes usually serves as decomposers... they eat dead bodies and in turns back the nutrients to land... they help maintains earth clean by preventing it to be clogged by dead bodies of different species..
however, there are also bad microbes which brings illness to living things... however, if you come to think of it.. it all goes with the ecological cycle in the ecosystem... they maintain the balance of species in the system by somehow contributing in the balance of mortarity rate of living things...
2007-08-19 17:32:17
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answer #1
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answered by Anonymous
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Some of the functions of microbes in the environment are:
1. Decomposing dead organic matter to recycle the nutrients
2. Carrying on photosynthesis to make food and release oxygen
3. Fixing atmospheric nitrogen into a compound in the ground that is useful to plants
4. Denitrifying nitrogen compounds and turning them back into gaseous nitrogen
5. Causing diseases of plants, animals, and so on
6. Part of the food chain in all kinds of environments, serving as food for protozoa and other organisms
7. Providing the energy for deep sea volcanic vent communities
8. Aiding in digestion and other processes inside animals
2007-08-19 17:51:48
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answer #2
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answered by ecolink 7
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Microorganisms live almost everywhere on earth where there is liquid water, including hot springs on the ocean floor and deep inside rocks within the earth's crust. Microorganisms are critical to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can also fix nitrogen, they are an important part of the nitrogen cycle. However, pathogenic microbes can invade other organisms and cause diseases that kill millions of people every year.
**Certain microbes have adapted so that they can survive and even thrive in conditions that are normally fatal to most lifeforms. Microorganisms have been found around underwater black smokers and in geothermal hot springs, as well as in extremely salty bodies of water.
**The nitrogen cycle in soils depends on the fixation of atmospheric nitrogen. One way this can occur is in the nodules in the roots of legumes that contain symbiotic bacteria of the genera Rhizobium, Mesorhizobium, Sinorhizobium, Bradyrhizobium, and Azorhizobium.
**Microorganisms are vital to humans and the environment, as they participate in the Earth's element cycles such as the carbon cycle and nitrogen cycle, as well as fulfilling other vital roles in virtually all ecosystems, such as recycling other organisms' dead remains and waste products through decomposition. Microbes also have an important place in most higher-order multicellular organisms as symbionts. Many blame the failure of Biosphere 2 on an improper balance of microbes.
**Microorganisms are used in brewing, baking and other food-making processes.
**Microbes are used in fermentation to produce ethanol.
**Microbes are also essential tools in biotechnology, biochemistry, genetics, and molecular biology. Microbes can be harnessed for uses such as creating steroids and treating skin diseases. Scientists are also considering using microbes for living fuel cells, and as a solution for pollution.
**Microorganisms can form an endosymbiotic relationship with other, larger, organisms. For example, the bacteria that live within the human digestive system contribute to gut immunity, synthesise vitamins such as folic acid and biotin, and ferment complex undigestible carbohydrates.
**The War of the Worlds, where microorganisms play important thematic and plot-related roles.
Fantastic Voyage, in which some scientists are miniaturised to microscopic size and observe micro-organisms from a new perspective
Blood Music, in which a colony of microorganisms is given intelligence
The Andromeda Strain, in which extraterrestrial microorganisms kill several people.
2007-08-19 20:19:52
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answer #3
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answered by Aseel 4
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