1. Difference between polluted water and potable water?
2. Why is ozone layer important?
3. Why CNG is considered to be a better fuel than petrol and diesel?
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2) answer:- The ozone layer present in the upper atmosphere absorbs most of the harmful ultraviolet rays of the the sun and prevents them from reaching the surface of the earth.Ultraviolet rays could cause skin cancer.
dayashankarpathak:
Thanks for giving me this answer. It is right. It prevents us from ultraviolet rays from sun.
Your welcome mate.
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Potable water can be consumed but polluted water should not be consumed; it is harmful for body.
Ozone layer is important because it prevents harmful UV rays coming from sun from reaching at earth. Ozone layers helps us to survive.
CNG is known for less emission of harmful carbon footprint and greenhouse gas. That is why use of CNG is preferred over petrol and diesel.
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