FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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soil organisms
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humus
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inorganic particles
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water
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only unweathered rock
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Detailed explanation-1: -The basic components of soil are minerals, organic matter, water and air. The typical soil consists of approximately 45% mineral, 5% organic matter, 20-30% water, and 20-30% air. These percentages are only generalizations at best.
Detailed explanation-2: -It is made up mainly of mineral particles, organic materials, air, water and living organisms-all of which interact slowly yet constantly. Most plants get their nutrients from the soil and they are the main source of food for humans, animals and birds.
Detailed explanation-3: -Soil contains water. Due to heat, water in the soil evaporates. Evaporated water vapour above the soil surface reflects the sunlight which looks like shimmering. Soil can retain water, and different types of soils retain different amounts of water.
Detailed explanation-4: -Soil that naturally occurs has water contained in it, which is referred to as soil water. This water which is held in water is also referred to as rhizic water.