class iv science lesson 8 exercise

  • 4 years ago
class iv science lesson 8 exercise
water scarcity and conservation of water

kanakclasses, KANAKCLASSES, DAV SCHOOL, D.A.V. SCHOOL, BOOK, EXERCISE, LESSON,
Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region. It already affects every continent and around 2.8 billion people around the world at least one month out of every year. More than 1.2 billion people lack access to clean drinking water.
What are the main causes of water scarcity?
Shortage of water for a sustained period is called water scarcity. Growing population, over-exploitation and unequal distribution of water among social groups are the main causes of water scarcity.
Major Causes Of Water Scarcity

Climate change.
Natural calamities such as droughts and floods.
Increased human consumption.
Overuse and wastage of water.
A global rise in freshwater demand.
Overuse of aquifers and its consequent slow recharge.

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kanakclasses, KANAKCLASSES, DAV SCHOOL, D.A.V. SCHOOL, BOOK, EXERCISE, LESSON, CLASS IV SCIENCE, LESSON 8, WATER SCARCITY, CONSERVATION OF WATER,