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

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

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World Geography
Which among the following statements is/are correct about Population of the world?In the twentieth century itself the population has increased four times.Human population increased more than ten times in the past 500 hundred years.World population exploded in the eighteenth century after the Industrial Revolution.Select the correct code from the options given below:

Only 1
Only 3
Only 2 & 3
1, 2 & 3

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