Biosphere Definition

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Biosphere Definition


What Is Biosphere 

The biosphere describes our living world. All organisms are found in the animal biosphere. The atmosphere extends over the upper part of the Earth as far as birds and insects are found. (Biosphere Definition) The biosphere extends to that in which any form of life can exist. The hydrosphere and the atmosphere come under the biosphere. Because life is found in these circles. 

The biosphere is a relatively thin layer of the Earth’s surface that extends from a few kilometers in the atmosphere to the deep-ocean waves of the ocean. The biosphere is a global ecosystem made up of living organisms (biota) and abiotic (non-living) factors. from which they obtain energy and nutrients. 


Biosphere Definition 

The biosphere is the layer of the Earth where life exists. This layer extends up to ten kilometers above sea level and up to 9 kilometers deep from the sea. The biosphere is one of the four layers that surround the Earth along with the lithosphere (rock), hydrosphere (water) and atmosphere (air) and is the sum of all ecosystems. 

The biosphere is unique. Till now there is no existence of life anywhere else in the universe. Life on Earth depends on the Sun. In the phenomenal phenomenon of photosynthesis, energy, provided in the form of sunlight, is absorbed by plants, some bacteria and protists. and produces oxygen. Species of animals, fungi, parasitic plants and many bacteria directly or indirectly depend on photosynthesis. 

Many factors affect the biosphere and our lives. Distance between Earth and Sun. If our planet were closer to the Sun, it would be very hot. If it were farther away, it would be very cold. Equally important is the tilt of the Earth. Because weather, climate change are the direct results of the tilt of the earth.


Creation Of Biosphere 

The biosphere has existed for about 3.5 billion years. Earlier organisms such as prokaryotes, single-celled organisms such as bacteria and archaea lived on oxygen. 

Some bacteria developed a unique chemical process. They started photosynthesis and making water oxygen and this continued. Over a long period of time, the atmosphere developed a mixture of oxygen and other gases that support new forms of life. 

The presence of oxygen in the biosphere facilitated the evolution of complex life forms. Millions of different plants and other photosynthetic species evolved. Animals consume plants. Bacteria and other organisms evolved to decompose or break down dead animals and plants. 

The remains of dead plants and animals form nutrients in the soil and ocean. These nutrients are reabsorbed by the growing plants. This exchange of food and energy makes the biosphere a self-supporting and self-regulating system. 


Biosphere Reserve 

Humans play an important role in maintaining the flow of energy in the biosphere. Sometimes, people obstruct this flow as well. When people clear forests or burn fossil fuels such as coal and oil. In the atmosphere, oxygen levels decrease and carbon dioxide levels increase. The future of the biosphere will depend on how humans interact with other organisms. 

In the early 1970s, the United Nations established a project called the Man and Biosphere Program, which promotes sustainable development. The function of the biosphere reserve is to establish a working, balanced relationship between people and the natural world. 

Currently, there are 563 biosphere reserves around the world. The first biosphere reserve was established in Yangbami, Democratic Republic of Congo. The Yangbei, in the fertile Congo River basin, is home to 32,000 species of trees and preserves of wild elephants. The Biosphere Reserve in Yangbei supports activities such as agriculture, hunting and mining. 

Biosphere Definition


Living Beings Of The Biosphere 

The biosphere is the entire area of the Earth inhabited by living things.


There are very different environmental conditions within the biosphere. On the basis of this, more or less different creatures live there.  

Biospheric external fields and microorganisms 

In the outer regions of the biosphere (far above or below the Earth’s surface) environmental conditions are very extreme (eg: extremely cold or hot temperatures, hardly any water resources). Only microorganisms survive here. 

Central regions of the biosphere and species diversit 

In the areas between the two extreme edge regions, you will mostly find comparatively mild and moderate temperatures, air pressure, radiation values, and pH values. There is also enough food and water for living things. Thus, in addition to microorganisms, a huge number of different animal and plant species have settled here.


Why Is The Biosphere Necessary 

For organisms to live, certain environmental conditions (such as proper temperature and humidity) must exist, and energy and nutrients must be supplied to the organisms. All animal and mineral nutrients necessary for life are contained within the Earth’s biosphere. Nutrients contained in the waste products of dead organisms or living cells are turned back into compounds that other organisms can reuse as food. This recycling of nutrients is necessary because there is no source of food outside the biosphere.

1. Promotes life on earth

In order to survive on Earth, various environmental conditions must exist, such as favorable temperature and humidity. Organisms also need energy and nutrients. All the minerals and animal nutrients needed to sustain life are found in the Earth’s biosphere. The nutrients present in the waste products of dead organisms or living cells are converted back into compounds that other life forms can use as food. This nutrient recycling is important because there is no source of food outside the biosphere. 

2. Production of organic matter 

Oxygen and nitrogen are produced in the biosphere through photosynthesis. These substances are responsible for almost every biochemical process in the production of organic matter. Organic matter is produced through the carbon cycle, which includes both terrestrial and organic substrates. 

Biosphere Definition, Why is the Biosphere Necessary

3. Provides raw materials and food 

The living components of the biosphere, also known as the biota, play an integral role in providing us with the raw materials we need to survive: food, fuel, and fiber. 

4. Cleans toxic substances from the earth 

The natural cycles of decomposition and biological modification, which occur in the biosphere, help planet Earth to flush out toxins and other components that can be harmful to life. For example, carbon dioxide is used in the photosynthesis process and bio-waste is reused. 

5. Could serve as pollution marker 

Studying and controlling the composition of the biosphere can serve as an efficient marker for maintaining terrestrial pollution levels. It will also help determine whether international treaties and public policies have actually had a real impact on current levels of planetary pollution. 


[Biosphere Definition | Why is the Biosphere Necessary]

Categories: BIOLOGY


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