1. Paper is used in our day to day life. Thousands of trees are cut to fulfil the demand of paper. If the trees are being cut for paper, there may be one day we will be left with no trees. So paper should be saved and should be used intelligently. The ways by which we can save paper are: • We should reRead more

    Paper is used in our day to day life. Thousands of trees are cut to fulfil the demand of paper. If the trees are being cut for paper, there may be one day we will be left with no trees. So paper should be saved and should be used intelligently. The ways by which we can save paper are:
    • We should recycle the waste paper.
    • We should not litter paper here and there.
    • Paper should be sent through proper channel for recycling.
    • We should not tear our old books and donate it to poor children so that they can reuse those books.
    • We should encourage buying recycled paper products.
    • We should avoid taking paper bags from the shops, instead we should carry jute bags.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-7/

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  2. Plants need carbon dioxide for photosynthesis. Fewer trees would mean that less carbon dioxide will be used up resulting in its increased amount in the atmosphere. This will lead to global warming as carbon dioxide traps the heat rays reflected by the earth. The increase in temperature on the earthRead more

    Plants need carbon dioxide for photosynthesis. Fewer trees would mean that less carbon dioxide will be used up resulting in its increased amount in the atmosphere. This will lead to global warming as carbon dioxide traps the heat rays reflected by the earth. The increase in temperature on the earth disturbs the water cycle and may reduce rainfall.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-7/

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  3. The green wealth of the locality is the responsibility of every resident. We should grow more and more plants in the locality. The resident should work together to conserve the green belt of the locality. Also they should be taught about the consequences of deforestation and global warming. I plantRead more

    The green wealth of the locality is the responsibility of every resident. We should grow more and more plants in the locality. The resident should work together to conserve the green belt of the locality. Also they should be taught about the consequences of deforestation and global warming.
    I plant trees in my locality. I also teach the small children and encourage the slogan one man one tree every year, so that every resident plants at least one tree in a year and takes care of it.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-7/

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  4. The ever increasing demand in factories and for shelter, trees are being continually cut. If we have to retain our green wealth for generations, plantation of more trees is the only option. Cutting of trees can only be justified when reforestation is done. Reforestation is the restocking of destroyeRead more

    The ever increasing demand in factories and for shelter, trees are being continually cut. If we have to retain our green wealth for generations, plantation of more trees is the only option. Cutting of trees can only be justified when reforestation is done.
    Reforestation is the restocking of destroyed forests by planting new trees. The trees planted should be of the same species that are generally found in the forests. We should plant as many trees as we cut. Reforestation can take place naturally also if the land is left undisturbed. The forests will establish itself over a period of time.
    We have damaged our forests to such an extent that it is difficult to retain the green wealth for our future generations. So it is very important to plant more trees and to find out ways of recycling and restoring our natural wealth.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-7/

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  5. For the purpose of breeding and specific purposes some species of birds and animals move from their habitat to some other habitat. The birds move to far away areas every during a particular time because of climatic changes and return to their original habitat after some time. This periodical of someRead more

    For the purpose of breeding and specific purposes some species of birds and animals move from their habitat to some other habitat. The birds move to far away areas every during a particular time because of climatic changes and return to their original habitat after some time. This periodical of some species is known as migration.

    https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-7/

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