kallain dam was bulit on kaveri
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The Grand Anicut Dam or Kallanai Dam was built on the Cauvery river by King Karikalan of Chola dynasty in the first century. The dam has been built with uneven stones and is 329 m long and 20 m wide. It was constructed with the idea to divert water across the delta region for irrigation.
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(i) Environmental aspects must be carefully looked into before building
huge dams.
(11) Most industries are concentrated around coal mines.
(1) Petroleum is referred to as “black gold”.
(iv) Quarrying can become a major environmental concern.
Distinguish between the followings.
(i) Conventional and non conventional sources of energy
(ii) Biogas and natural gas
(iii) Ferrous and nonferrous minerals
(iv) Metallic and nonmetallic minerals
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