1999When the gradient of a river channel changes from a steep to a gentle angle, the main activity of the river will beSee more
1999The main advantage of the chain survey over the prismatic compass survey is that the formerSee more
1999In many areas, limestone rocks are resistant to water erosion on their surfaces and form uplands because of theirSee more
1999A traveller crossing the international Date Line from America to Asia at 12 midnight on Sunday, would have to change his watch to 12 midnight onSee more
1999Which of the following is a major environmental problem in heavily industrialized regions?See more
1999Soils with well developed profiles formed mainly under the influence of the regional climate and vegetation are said to beSee more
1999The circulation of the oceans and the atmosphere primarily help to redistribute and equalize globalSee more
1999Many industries in Europe and America have established branches in South East Asia in order to reduceSee more
1999International agreements in the fishing industry are necessary in order to protect whale and seal fromSee more