FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the atmosphere
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respiration of soil organisms.
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the atmosphere and from respiration of soil organisms.
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water
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Detailed explanation-1: -The air in soil is in constant exchange with the atmosphere. Gases diffuse from the atmosphere into the soil and back out again, like breathing. The volume and rate of this exchange depend on soil texture, pore space volume, and the activity of flora and fauna.
Detailed explanation-2: -Soil respiration refers to the production of carbon dioxide when soil organisms respire. This includes respiration of plant roots, the rhizosphere, microbes and fauna. Soil respiration is a key ecosystem process that releases carbon from the soil in the form of CO2.
Detailed explanation-3: -Soil air and atmospheric air differ in the compositions. Soil air contains a much greater proportion of carbon dioxide and a lesser amount of oxygen than atmospheric air. At the same time, soil air contains a far great amount of water vapour than atmospheric air.
Detailed explanation-4: -Animal living inside the soil get oxygen for breathing (or respiration) from the air present between the soil particles.