World Geography
The period of daylight

All of these
is nearly constant near the equator
varies with latitude and the season
reaches a maximum of 24 hour in the polar zones in summer

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World Geography
Which among the following principle is used by Bats?

law of diffraction
SONAR (Sound Navigation & Ranging
law of reflection
RADAR (Radio Detective & Ranging

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World Geography
The term 'flora' in the context of natural vegetation refers to

plants of a particular region or period, listed by species and considered as a group
assemblage of plant species living in association with each other in a given environmental frame
role played by species of animals in the maintenance of ecological balance
a large tract covered by trees and shrubs and its administration for assessing economic benefits

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