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Question

Read the following statements and give the appropriate terms for each of them.

(a) The process of breakdown of rocks by the action of wind, water, and sunlight.

(b) Removal of topsoil during heavy rains or strong winds.

(c) Accumulation of wastes in the soil generated by human activity alters the features of the soil.

(d) The process of movement of water into deeper layers of soil.


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Solution

(a) Weathering:

The action of climatic and meteorological elements, animals, and plants on the surface of the land to biologically, chemically, and physically break them down is called weathering.

(b) Soil erosion:

Soil erosion is a continuous process that occurs slowly or at an alarming rate. This leads to further loss of topsoil, ecological degradation, land collapse, etc.

(c ) Soil pollution:

Soil pollution is soil pollution caused by abnormal concentrations of toxic substances. This is a serious environmental problem because it poses many health risks.

(d) Percolation:

Percolation is the process of filtering a liquid as it passes through a filter. Precipitation seeps into the ground by percolation, where water moves downward through small gaps between rocks and soil particles.


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