Class 10 Science - Chapter Sustainable Management of Natural Resource NCERT Solutions | Why do you think that there should be eq

Find out about the traditional systems of water harvesting/management in your region.

Suggest some approaches towards the conservation of forests.

We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?

List five things you have done over the last one week to —

(a) conserve our natural resources.
(b) increase the pressure on our natural resources.

Find out the source of water in your region/locality. Is water from this source available to all people living in that area?

How can you as an individual contribute or make a difference to the management of (a) forests and wildlife, (b) water resources and (c) coal and petroleum?

Why should we conserve forests and wildlife?

Compare the above system with the probable systems in hilly/mountainous areas or plains or plateau regions.

What changes can you make in your habits to become more environment-friendly?

What can you as an individual do to reduce your consumption of the various natural resources?

Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.

What is a good source of energy?

Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?

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

What is the difference between a reflex action and walking?

What is the importance of DNA copying in reproduction?

If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?

Why should a magnesium ribbon be cleared before burning in air?

Define the principal focus of a concave mirror.

You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?

How can you help in reducing the problem of waste disposal? Give any two methods.

In the Modern Periodic Table, which are the metals among the first ten elements?

Why does dry HCl gas not change the colour of the dry litmus paper?

How would you name the following compounds?

   (i)    CH₃  -- CH₂  -- Br

  (ii)

(iii) 

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?

Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

What is the role of the split ring in an electric motor?

What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem?

Name some devices in which electric motors are used.

Why are we looking at alternate sources of energy?