World Geography
The length of the tropical years (the time interval between successive occurrences of the spring equinox) is decreasing very slowly as a result of

both (a) and (b)
small, progressive change in earth's orbit around the sun
small, progressive changes in the earth's rotational speed
None of these

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World Geography
Which among the following factor/factors have led to the extensive development of dairy farming in the dairy belt of North America?Hot and humid climateRainfall varying between 55 and 125 cm.Select the correct code from the options given below:

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

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