Biology
Study the figure shown here and answer the following questions.
(a) Identify the kind of pollution and define it.
(b) Mention four main sources of the pollution.
(c) Write two harmful effects of the above-mentioned pollution for the living organisms.
Pollution
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Answer
(a) Acid rain. Gases such as CO2, SO2 and oxides of nitrogen get dissolved in rain drops falling on the earth as rain. This constitutes acid rain.
(b) Four main sources of acid rain are:
- Exhaust from vehicles contains CO2, SO2 and CO.
- Smoke released by factory chimneys contain CO2, SO2 and oxides of nitrogen.
- Burning of garbage releases CO2 and other harmful gases.
- Brick kilns produce ash which mixes with air to contribute to acid rain.
(c) Two harmful effects of acid rain on the living organisms are:
- Damage to vegetation by pollution of the soil.
- Fish and other aquatic organisms are harmed due to increased acidity of water in lakes and rivers.
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The picture below shows a campaign recently started by the Indian Government.
(i) When was this campaign launched ?
(ii) Mention the chief objectives of this campaign.
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(a) Define the kind of pollution shown here.
(b) Name two types of the kind of pollution shown here.
(c) Write two main sources of above mentioned pollution with one example each.
(d) Write two points to control the given pollution.
Study the pictures given below of the two main categories of wastes and answer the questions:
(i) Identify the categories of wastes in (A) and (B).
(ii) Which of the above category of wastes can be used to prepare compost?
(iii) Mention one control measure to manage the waste of category (B).
Pollution is on the rise due to a rapid increase in the number of automobiles and buildings. All of these release a large amount of harmful gases and particulate pollutants in the atmosphere which react with atmospheric moisture and produce various kinds of acidic gases.
(i) Mention two main gases which are emitted from the industries into the atmosphere.
(ii) What are the two main acids produced in the atmosphere when poisonous gases combine with the atmospheric moisture ?
(iii) Write two harmful effects of acid rain.