Monday, August 21, 2017

CBSE Class 10 - Science - MANAGEMENT OF NATURAL RESOURCES - Important Points That You Must Know (#cbseNotes)

MANAGEMENT OF NATURAL RESOURCES - Important Points That You Must Know

CBSE Class 10 - Science - MANAGEMENT OF NATURAL RESOURCES - Important Points That You Must Know (#cbseNotes)

1. We can manage and conserve our natural resources as well as the environment through sustainable development.

2. Sustainable development means development which meets the needs of the present generation as well as of the future generation.

3. The objective of sustainable development is to maintain a healthy environment which is pollution free, so that human beings can live in harmony with nature.

4. To achieve sustainable development, the goal should be to minimise resource use.

5. Preservation refers to non-use, conservation attempts to minimise the use of a natural resource and restoration seeks to return a degraded resource to its original state.

6. The 3R’s in sustainable development are reduce, recycle and reuse.

7. ‘Reuse’ is in a way better than recycling because the energy used for recycling the resources is not used in case of reuse.

8. Forests are “biodiversity hotspots”.

9. BOD (Biological Oxygen Demand) is the amount of oxygen required for biological oxidation of microbes in any unit volume of water.

10. Stakeholders are the people living in or around the forests.

11. The “Chipko movement” (“Hug the tree movement”) was a movement of the local people to resist the deforestation attempt on the hill slopes.

12. Renewable natural resources are replenished regularly and are therefore, likely to remain available indefinitely if they are used judiciously. Example: forests.

13. A major law protecting endangered species globally is CITES (Convention on International Trade in Endangered species).

14. India has 581 protected areas, among them 89 are National Parks and 492 wildlife sanctuaries.

15. Methane is a major constituient of bio gas.

16. “Project Tiger” was initiated in 1973 and it was founded by the World Wide Fund for Nature.

17. The Narmada Bachao Andolan has been very active in its movement against the Sardar Sarovar Project in Gujarat.

18. Coliform bacteria act as water pollution indicator.

19. Fossil fuels such as coal and petroleum are termed as non-renewable sources of energy.

20. The existence of a wide variety of species of plants, animals and micro-organisms in a natural community is called biodiversity.

21. Acid rain as well as global warming are the result of exploitation and misuse of natural resources.

22. Some important NGOs working in the field of environment are Kalpavriksh (New Delhi), World Wide Fund for Nature - India, Bombay Natural History Society (BNHS) Mumbai, etc.

23. Khadin is a traditional water harvesting system in Rajasthan.

24. Bandharas and tals are the water harvesting methods used in Maharashtra

25. Amrita Devi Bishnoi National Award is given for Wildlife Conservation.

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