15. Resources
Explanation:
2.5 per cent Globally water occupies a major portion. Of the total water content fresh water contributes a very little portion of 2.5%. This water is utilized by living beings on earth for the survival. Sources of freshwater include groundwater - water found in shallow aquifers beneath the earth's surface. This water is generally found at depths up to around 2,000 feet deep. Surface water - Water found in streams, rivers, lakes, and reservoirs.