World Geography
The typical soil of tropical region, formed by the weathering of laterite rock, which promotes leaching of the soil is

black soil
peat and marshy soil
red and yellow soil
laterite soils

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World Geography
Which among the following statements is/are correct about the symbiotic life of Corals?Algae gives carbon dioxide and other substances the  coral polyp needs.Coral polyp gives off oxygen and other nutrients that the algae needs.Select the correct code from the options given below:

Only 2
Both 1 & 2
Neither 1 & 2
Only 1

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World Geography
The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

ultraviolet rays from the sun
None of these
infrared rays from the sun
the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun

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