Resources

Q20. How are resources classified according to their development and use?

Ans. On the basis of their development and use resources can be classified into two groups, actual resources and potential resources.

Q21. What is human resource development?

Ans. Improving the quality of people’s skills so that they are able to create more resources is known as human resource development.

Q22. What are the physical factors that affect the distribution of natural resources?

Ans. The distribution of natural resources depends upon number of physical factors like terrain, climate and altitude.

Q23. Why are human resources important?

Ans. Human resources are important because people can make the best use of nature to create more resources by applying knowledge, skill and the technology.

Q24. Why are people considered as a resource?

Ans. People are considered a resource because people can make the best use of nature to create more resources when they have the knowledge, skill and the technology to do so.

Q25. Why are resources distributed unequally over the earth?

Ans. The distribution of natural resources depends upon number of physical factors like terrain, climate and altitude. The distribution of resources is unequal because these factors differ so much over the earth.

Q26. How potential resource can be actual resource?

Ans. High speed winds were a potential resource two hundred years ago. Today they are an actual resource and wind farms generate energy using windmills like in Netherlands, some in Nagercoil in Tamil Nadu and on the Gujarat coast.

Q27. Mention how stock of certain renewable resources may get affected by overuse.
Or
Why certain renewable resources need to be used judiciously?

Ans. Careless use of certain renewable resources like water, soil and forest can affect their stock. Water seems to be an unlimited renewable resource. But shortage and drying up of natural water sources is a major problem in many parts of the world today.

Q28. Differentiate between abiotic and biotic resources.

Ans.

Q29. Differentiate between ubiquitous and localised resources.

Ans.

Q30. Mention our duty to maintain and preserve the life support system that nature provides us.

Ans. The future of our planet and its people is linked with our ability to maintain and preserve the life support system that nature provides. Therefore it is our duty to ensure that.

                          i.        all uses of renewable resources are sustainable

                         ii.        the diversity of life on the earth is conserved

                        iii.        the damage to natural environmental system is minimised.

Q31. What is the significance of time and technology in making a substance a resource?

Ans. Time and technology are two important factors that can change substances into resources. Each discovery or invention leads to many others. The discovery of fire led to the practice of cooking and other processes while the invention of the wheel ultimately resulted in development of newer modes of transport. The technology to create hydroelectricity has turned energy in fast flowing water into an important resource.

Q32. Write the basic principles of sustainable development.

Ans. Some Principles of Sustainable Development

                          i.        Respect and care for all forms of life.

                         ii.        Improve the quality of human life.

                        iii.        Conserve the earth’s vitality and diversity.

                        iv.        Minimise the depletion of natural resources.

                         v.        Change personal attitude and practices toward the environment.

                        vi.        Enable communities to care for their own environment.

Q33. Differentiate between natural resources and human made resources.

Ans.

Q34. Differentiate between potential and actual resources.

Ans.