What is natural environment - Definition of natural environment
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What is natural environment?The natural environment is a state in which all living and nonliving things occur in a particular region. The natural environment in its totality is the biosphere. The biophysiological definition of the biosphere is: the global sum of all ecological systems integrating all living beings and their relationships and also their interactions with the surrounding natural nonliving elements. Most of man's actions alter the original prevailing conditions, affecting the ecosystems in a negative manner, in the vicinity or elsewhere.
There can be no absolute natural environment as the man's actions influence the original prevailing conditions, directly, indirectly or remotely. For example, the ozone layer or ozone shield in the stratosphere absorbs most of the UV radiation. There is natural maintenance of ozone levels by a continuing process called the ozone-oxygen cycle. However, the man-made chlorofluorocarbons (CFCs) and bromofluorocarbons on their release into the atmosphere rise to the stratosphere. There, they are broken down by the UV light, releasing Cl and Br radicals. These halogen radicals react and breakdown ozone molecules causing depletion of ozone layer. The depletion of ozone layer affects all the organisms on the Earth, wheresoever they may be, in many ways.
Image attribution: Jerzy Strzelecki | License: CC BY-SA 3.0
Image attribution: USAF/Joshua Strang | License: Public domain
DefinitionDefinition by biology-online.org: "All living and non-living things that occur naturally on a particular region."
"A natural environment is one in which human impact is kept under a certain limited level."
Keywords: natural environment, definition,
By Mahmood Syed Faheem
Image attribution: Dick Mudde |License:public domain
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