1. Biogeochemicals are essential elements or nutrients (H ₂O, N, O, C, etc.) required by living organisms which are obtained from Earth (land, air and water).

    Biogeochemicals are essential elements or nutrients (H ₂O, N, O, C, etc.) required by living organisms which are obtained from Earth (land, air and water).

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  2. Biogeochemical cycles are repeated circulation of biogeochemicals between abiotic and biotic components of the environment which result in their repeated withdrawal and replacement of their pool.

    Biogeochemical cycles are repeated circulation of biogeochemicals between abiotic and biotic components of the environment which result in their repeated withdrawal and replacement of their pool.

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  3. Methane burp is a process of periodical release or belching of methane in huge quantities. This is caused by the melting of the methane hydrates existing in permafrost and sea floor. Methane is a GHG, one of the main culprit of global warming.

    Methane burp is a process of periodical release or belching of methane in huge quantities. This is caused by the melting of the methane hydrates existing in permafrost and sea floor. Methane is a GHG, one of the main culprit of global warming.

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  4. The organisms which consume detritus are called detritivores, e.g., Earthworm.

    The organisms which consume detritus are called detritivores, e.g., Earthworm.

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  5. Terracing is building flat crop fields on the slopes of hills so as to slow down the flow of water and checking soil erosion.

    Terracing is building flat crop fields on the slopes of hills so as to slow down the flow of water and checking soil erosion.

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