[A]. Read the following passage and complete the given activities: (10 Marks)
A1. Fill in the blanks : (2)
(i) Balance of nature is essential for ____________ of living beings.
(ii) Concentration of carbon dioxide in air leads to ____________ .
(iii) If precautions are taken we can ____________ the balance of nature.
(iv) To reduce the strain on natural resources we must accept ____________and alternate energy resource.
Balance in nature is essential for the survival of living beings Unfortunately, this balance is being disturbed by man as a result of his activities. Human beings upset the balance of nature by cutting down forests, trees for his needs of firewood, timber for buildings wood for furniture and for agricultural uses, land for housing and setting of new industries. Excessive use of pesticides and fertilizers also disturbs the balance of nature. Indiscriminate killing of animals disturbs the food chain. Deforestation and excessive burning of fuel Is causing an increase in carbon dioxide concentration in the air eventually leading to global warming.
Thus through his acts man has destroyed the natural ecosystem and has created an imbalanced condition in the environment, but if we still take precautions we can attempt to restore the balance. Therefore, encourage tree plantation drives, protect forest areas, avoid using plastic bags, promote walking and cycling to limit use of fuels. Enforce strict laws against illegal hunting or capturing of animals. Use and accept renewable energy resources to reduce the strain on natural resources like water, soll, wood, etc.
So focus on the 3Rs Reduce, Recycle and Reuse to maintain ecological balance of Mother Earth.
A2. Find :(2)
(i) Two factors leading to imbalance in nature.
(ii) 'Two precautions to restore the balance of nature.
A3. From the following words, pick out words formed by adding prefix or suffix:(2)
Important. encourage, Indiscriminate, recycle. Imbalance, concentration, essential.
A4. Do as directed:(2)
(i) Human beings upset the balance of nature. (Add a question tag and rewrite the sentence.)
(ii) Through his acts man has destroyed the natural ecosystem and has created an imbalance in the environment.
(Rewrite using not only .................. but also.)
A5. Personal Response:(2)
What will you do to save the environment? Elaborate.
[B]. Read the passage given above and write a summary of it in a paragraph. Suggest a suitable title. (5 Marks)