Answer the following questions:
1. Name any two natural sources which causes air pollution.
2. What would have happen if there was no greenhouse effect?
3. How does excessive use of fertilization causes eutrophication
What are the damaging effects of ozone layer depletion?
5. What are the main causes of water pollution?
Write any two methods you suggest to control water pollution
Answers
Answer:
1.Some of the natural sources of air pollution are organic compounds from plants, sea salt, suspended soils and dusts (e.g. from the Sahara). Other natural sources are released during catastrophes such as volcanic eruptions and forest fires.
2.Without any greenhouse gases, Earth would be an icy wasteland. Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space. This heat trapping is known as the greenhouse effect.
3.The excessive use of fertilisers cause the micro organisms in the water to get a healthy growth. Therefore, the micro organisms like algae grow and block sunlight from reaching the aquatic organisms.so it causes eutrophication.
4.Effects of ozone depletion for humans and the environment
Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.
5.Causes of Water Pollution
Eutrophication and Water Pollution.
Sewage and Wastewater Pollution.
Answer:
1. Two natural sources which causes air pollution are
(i) Dust.
(ii) Smokes released from eruption of volcanoes.
2. If there was no greenhouse effect, then whole Earth will be as like antartica Or Earth will be freezed fully..
Greenhouse effect keeps Earth warm and maintains and balances temperature on it.
Without it, all living beings can't survive and also temperature will fall down.
It will become like other planets which life doesn't exist...
Life will be end if greenhouse effect will be absent in our Earth.
3. The excessive use of fertilization results in the healthy growth of micro-organisms in the water.
Therefore, the algae, which grows on the water bodies grow more and make a layer on the water which results the blockage of sunlight and oxygen leads to the death of aquatic animals..
This is known as Eutrophication.
4. Damaging effects of ozone layer depletion-:
i) Increase of UV Rays.
ii) Results in Skin Cancer/Infections and Cataract (A disease caused in eyes).
iii) Immune deficiency disorders.
5. Causes of water pollution-:
i) Eutrophication
ii) Sewage blockage
iii) Smoke released from industries and factories, get mixed with clouds results in ACID RAIN.
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