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Praveen

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  1. Asked: January 4, 2021In: Class 10 Science

    What is the role of decomposers in the ecosystem?

    Praveen
    Added an answer on January 30, 2021 at 1:34 pm

    (i) Decomposers help in decomposing the dead bodies of plants and animals and hence act as cleansing agents of the environment. (ii) Decomposers also help in putting back the various elements of which dead plants and animals are made, back into the soil, air and water for reuse by the producers likeRead more

    (i) Decomposers help in decomposing the dead bodies of plants and animals and
    hence act as cleansing agents of the environment.
    (ii) Decomposers also help in putting back the various elements of which dead plants and
    animals are made, back into the soil, air and water for reuse by the producers like crop
    plants.
    (iii) They help in recycling of the nutrients.
    (iv) They decompose dead remains thereby providing space for new life to settle in the
    biosphere.

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  2. Asked: October 28, 2020In: Class 10

    What are trophic levels? Give an example of a food chain and state the different trophic levels in it.

    Praveen
    Added an answer on January 30, 2021 at 1:32 pm

    Trophic Levels : The various steps in a food chain at which the transfer of food (or energy) takes place are called trophic levels. Example A food chain operating in a grassland is given below : Grass -> Insects -> Frog-> Birds In this food chain 1. Grass represents first trophic level. 2 GRead more

    Trophic Levels : The various steps in a food chain at which the transfer of food
    (or energy) takes place are called trophic levels. Example A food chain operating in a
    grassland is given below :
    Grass -> Insects -> Frog-> Birds
    In this food chain
    1. Grass represents first trophic level.
    2 Grasshopper represents second trophic level.
    3. Frog represents third trophic level.
    4 Eagle represents fourth tropic level.

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  3. Asked: October 22, 2020In: Class 10

    Suggest some approaches towards the conservation of forests.

    Praveen
    Added an answer on January 30, 2021 at 1:29 pm

    Some approaches towards the conservation of forests are as follows: (a) People should show their participation in saving the forest by protesting against the cutting of trees. For example, Chipko Andolan (b) Planting of trees should be increased. Rate of afforestation must be more than that of deforRead more

    Some approaches towards the conservation of forests are as follows:
    (a) People should show their participation in saving the forest by protesting against the
    cutting of trees. For example, Chipko Andolan
    (b) Planting of trees should be increased. Rate of afforestation must be more than that of
    deforestation.
    (c) Some people cut precious trees such as Chandan to earn money. Government should
    take legal steps to catch these wood smugglers.
    (d) Habitants of forests must not be bothered by the forest offcials. Otherwise, this
    would result in the clash between tribal people and the government offcials, thereby
    enhancing the naxal activities in forests.

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  4. Asked: October 22, 2020In: Class 10

    Why should we conserve forests and wildlife?

    Praveen
    Added an answer on January 30, 2021 at 1:27 pm

    We should conserve forests and wildlife to preserve the biodiversity (range of different life-forms) so as to avoid the loss of ecological stability. A large number of tribes are the habitants in and around the forests. If the forests are not conserved, then it may affect these habitants. Without prRead more

    We should conserve forests and wildlife to preserve the biodiversity (range of
    different life-forms) so as to avoid the loss of ecological stability. A large number of
    tribes are the habitants in and around the forests. If the forests are not conserved, then it
    may affect these habitants. Without proper management of forest and wildlife, the
    quality of soil, the water sources, and even the amount of rainfall may be affected.
    Without forest and wildlife, life would become impossible for human beings.

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  5. Asked: October 22, 2020In: Class 10

    How would these advantages differ from the advantages of using a longterm perspective in managing our resources?

    Praveen
    Added an answer on January 30, 2021 at 1:25 pm

    In the case of a long-time perspective in managing our resources, these resources will last for the generations to come. This management ensures uniform distribution among the people. It conserves the natural resources for many years and not just for a few years, as in the case of a short-term perspRead more

    In the case of a long-time perspective in managing our resources, these
    resources will last for the generations to come. This management ensures uniform
    distribution among the people. It conserves the natural resources for many years and not
    just for a few years, as in the case of a short-term perspective in conserving natural
    resources.

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  6. Asked: October 22, 2020In: Class 10

    Why do you think that there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?

    Praveen
    Added an answer on January 30, 2021 at 1:22 pm

    Natural resources of the Earth must be distributed among the people in such a way so that no one can be restrained from their share. Forces working against an equitable distribution of resources are: 1. Human greed 2. Corruption 3. Lobby of the rich and powerful people

    Natural resources of the Earth must be distributed among the people in such a way so that no one can be restrained from their share.

    Forces working against an equitable distribution of resources are:

    1. Human greed

    2. Corruption

    3. Lobby of the rich and powerful people

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  7. Asked: October 22, 2020In: Class 10

    What would be the advantages of exploiting resources with short-term aims?

    Praveen
    Added an answer on January 30, 2021 at 1:16 pm

    There should be a judicious use of natural resources as they are limited in nature. We should not exploit resources for our short term gains as this would only lead to depletion of natural resources for the present generation as well as generations to come. Hence, we can say that there are hardly anRead more

    There should be a judicious use of natural resources as they are limited in
    nature. We should not exploit resources for our short term gains as this would only lead
    to depletion of natural resources for the present generation as well as generations to
    come. Hence, we can say that there are hardly any advantages of exploiting natural
    resources for short term gains.

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