Question

E. Answer the following questions.
1. Why were the first villages around the world built near rivers?
2. What do you mean by contaminated water?
3. What is meant by recycling water?
4. Explain rainwater harvesting.
5. What are the ways in which we can save water or use water carefully to
avoid wastage?
a
D
G​

Answer 1

1. Rivers were attractive locations for the first civilizations because they provided a steady supply of drinking water and game, made the land fertile for growing crops, and allowed for easy transportation.

2. Contaminated water is water that is changed due to the presence of chemicals, microbes or physical alterations.

3. Water reclamation is the treatment or processing of wastewater to make it reusable with definable treatment reliability and meeting appropriate water quality criteria; water reuse is the use of treated wastewater (or reclaimed water) for a beneficial purpose.

4. Rainwater harvesting is defined by Wikipedia as “the accumulation and deposition of rainwater for reuse on-site, rather than allowing it to run off.” While this definition is basic, the practice of rainwater harvesting is greatly varied from where the rainwater is collected from to how the rainwater is ultimately used.

5. Ways to save water :

• Take a Shower of 5 Minutes or Less.

• Turn Off the Tap While Brushing Your Teeth & Washing Your Hands.

• Don't Keep The Tap Running While Washing Clothes/Utensils.

• Close Taps Properly and Fix Leaking Taps, Pipes & Toilets.

• Turn off the water while shaving.