1 point 24. (a) United nations is one of the most important International organisation (b) It is the only organisation which can check the US hagemony in international politcs O (a) is true but (b) is false O Both the statement are true O Both the statement are false O(a) is false but (b) is true
Answers
Answered by
0
The process of taking out minerals from rocks buried
under the earth’s surface is called mining. Minerals that
lie at shallow depths are taken out by removing the surface
layer; this is known as open-cast mining. Deep bores, called
shafts, have to be made to reach mineral deposits that lie
at great depths. This is called shaft mining. Petroleum
and natural gas occur far below the earth’s surface. Deep
wells are bored to take them out, this is called drilling
(Fig 3.4). Minerals that lie near the surface
Explanation:
Similar questions