Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rain water during the journey but to his surprise he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.
A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.
Is it a good practice to remove grass and small plants that are growing in an open, unused field? Give reason to support your answer.
Which of the following situations – ‘A’ or ‘B’ – is advantageous
for absorption of water and minerals? Why?
Situation ‘A’ : Growth and branching of roots in the C-horizon.
Situation ‘B’ : Growth and branching of roots in A and Bhorizons.
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.
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