GENERAL GEOLOGY

GEOLOGY

PHYSICAL GEOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is soil?
A
A mixture of minerals
B
A mixture of water, minerals, gases and organic matter
C
A type of rock
D
A type of bacteria
Explanation: 

Detailed explanation-1: -Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil.

Detailed explanation-2: -In short, soil is a mixture of minerals, dead and living organisms (organic materials), air, and water. These four ingredients react with one another in amazing ways, making soil one of our planet’s most dynamic and important natural resources. Soil is used by people in numerous ways.

Detailed explanation-3: -Soil is a material composed of five ingredients-minerals, soil organic matter, living organisms, gas, and water. Soil minerals are divided into three size classes-clay, silt, and sand (Figure 1); the percentages of particles in these size classes is called soil texture.

Detailed explanation-4: -Soil is a mix of varying amounts of inorganic matter, organic matter, water, and air. Soil which contains particles of different kinds is a mixture or an impure substance. The components of soil can be separated using physical methods.

Detailed explanation-5: -Soil is the loose surface material that covers most land. It consists of inorganic particles and organic matter. Soil provides the structural support to plants used in agriculture and is also their source of water and nutrients. Soils vary greatly in their chemical and physical properties.

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