Q1. Name two measure that can be taken to reduce water pallution?

 Q2. Suggest 2 method to control air pollution?

 Q3. Draw a labelled diagram to show oxygen cycle in bioshere.

 Q4. Enlist the various process by which atmospheric oxygen and oxygen dissolve in water is                   consumed.

 Q5. Name any 2 water pollutants.

 Q6. Give 2 causes of soil erosion.

Hi,

 

Ans1. Water is a very important entity needed for our life. Water gets polluted when unwanted substances formed as a result of human intervention get mixed in it. This can be prevented by regulating the type of wastes that enter the water body. We should avoid taking bath, washing clothes and washing animals in water bodies.Factories and industries should be built away from water bodies and they should be asked not to let their contaminated water mix with the water in the rivers and lakes.

Ans2. Methods to control air pollution are:

·  Whenever possible, try to travel by public transports.

·  Car pool will reduce the number of cars, thereby, preventing air pollution by cutting down the use of fossil fuels.

·  Always try to minimize smoke emission, as it can contribute to air pollution.

Ans3. Oxygen cycle

We are happy to see the interest you are showing towards this section! Thank you for your response. However, due to a paucity of time we will not be able to immediately answer all your queries. We are providing the answer to few of your best questions. The answers to the other questions asked by you are easily available in our lessons. Kindly refer to lesson 6; chapter 14.

 

Happy surfing!

 

Best wishes!