Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.

Rock, Clay, Sand, Gravel, Silt

Soil conservation measures are mainly aimed at protecting which of the following?

Read the following statements with reference to soil.

(i) Weathering is a very fast process of soil formation.

(ii) Percolation of water is faster in sandy soils.

(iii) Loamy soil contains only sand and clay.

(iv) Top soil contains the maximum amount of humus.

Choose the correct statements from the above.

The components of loamy soil are ______, ______ and ______.

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, sunlight.

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

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

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