Answer:
Landslides are slippery masses of rock, earth or debris which move by force of their own weight down mountain slopes due to heavy rainfall and steep slopes. Harmful effects of landslides: (a) Landslides cause devastating damage to road transport and communication network. (b) Due to landslides, river may get blocked forming an artificial lake which can overflow and cause floods. (c) Houses built on steep slopes will be destroyed by debris flow, rock toppling and boulder rolling, causing loss of life and property.
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