Question:

More than $70\%$ of worlds freshwater is contained in

Updated On: Aug 15, 2022
  • Antarctica
  • Glaciers and Mountains
  • Greenland
  • Polar ice
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The Correct Option is D

Solution and Explanation

Three fourth surface of earth (about $71 \%$ of total) is occupied by oceans which contain $97.5\%$ of total water. This is marine water with about $3.5 \%$ salt contents. Rest water i.e., $2.5 \%$ is freshwater, which occurs on land. Most amount of this water (about $1.97 \%$ ) occurs as frozen ice caps and glaciers and $0.5 \%$ freshwater occurs as ground water.
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Concepts Used:

Organisms and Populations

Organisms:

An attached living system that lives in an environment is commonly known as an organism. These organisms are able to retain certain behaviors and structures. Some examples of organisms are plants, animals, bacteria, fungi, and humans. A group of these organisms leads to the formation of a population. The collection of the population forms a community that assists in the operation of ecosystems. 

Each and every organism has the ability to adapt itself to various conditions of the environment. This capacity of organisms is due to their genetic variations. It is due to this only that their probability of survival get increases. For instance, camels adapt themselves to survive in desert areas and polar bears adapt to the extreme cold conditions or situations through their dense fur coat.

Populations:

A collection of organisms or individuals of a species that live, at a specific time, in a geographical area that is well-defined and capable of interbreeding is described as a population.

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