NCERT Class 10 Science Chapter 16 Short Notes with Important Definitions for Quickly Remember all Points in Class 10 Science and Score High in Exams. Our Website also Provide Class 10 Science Textual Question Answer and Important Questions for CBSE, HBSE, Mp Board, Up Board and Some other State Boards to Help Students in Better Score. NCERT Class 10 Science Chapter 16 Sustainable Management of natural resources notes with important points and definition for Quick remember for exams.
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Sustainable Management of Natural Resources Class 10 Science Notes
- Air, soil and water are our natural resources.
- These natural resources should be used in such a way that both resources do not get polluted and environment remains conserved and pollution free.
- Coal and petroleum are also our natural resources and these need to be used in a sustainable manner for development.
- There are number of international laws and regulations to protect our environment.
- Three R’s are being used to save our environment. These three R’s respectively : Reduce (use less), Recycle (Recycle the wastes), Reuse (use things again and again).
- ‘Reduce’ means that we should use less avoiding unnecessary wastage.
- Electricity and water can be saved by repairing leaking taps and by switching off lights and fans.
- ‘Recycle’ means that materials like glass, plastic, metals etc. can be used again and again by recycling in place of dumping them along with other waste materials.
- Reusing is better than recycling because a thing can be used again and again.
- Recycling always needs consumption of some energy.
- ‘Ganga Action Plan’ was started in 1985 because quality of water was reduced to a very low level. Coliform is a group of bacteria and is found in human intestines.
- The presence of coliform in water indicates contamination by disease-causing microorganism.
- River Ganga runs its course of over 2500 km from Gangotri in the Himalayas to Ganga Sagar in the Bay of Bengal.
- River Ganga has been turned into a drain by the people living in towns various states, People wash their clothes at its banks. They pour their garbage and excreta into it. They wash their clothes, take bath, immerse ashes and unburnt corpses in its water.
- We get energy from the Sun being processed by living organisms and various physical and chemical processes on the earth.
- The management of natural resources needs a long termed perspective. Mining also becomes a huge cause of pollution because a large amount of slag is produced due to it.
- The forests are called ‘biodiversity hot spots’.
- In any area, one measure biodiversity is the number of species found there.
- Forests are the favourite sites for fishing and hunting.
- People gather fruits, nuts and medicines from the forests and they also allow their to graze in the forests. They collect fodder from the forests for their cattle.
- We get timber, paper, lac and sports equipment from the forests.
- Water is a basic necessity for all terrestrial forms of life.
- Water supports our life system. All chemical reactions of our body take place in the presence of water. It controls ter rature of our body. It helps in excretion. Water regulates the atmosphere of our earth. It helps in operating various machines and generating electricity. Water is very necessary for agriculture and industry.
- Water present in all seas supports aquatic life. Rains in our country are largely due to monsoons.
- Vegetation cover of our country gets affected because of failure to sustain underground water.
- In our country, irrigation methods are – dams, tanks and canals. Large dams and canals were first conceived and implemented by the British in our country.
- Kulhs were used in Himachal Pradesh for irrigation. This system was evolved about four hundred years ago.
- Large dams can ensure the storage of adequate water for irrigation and generating electricity.
- Dams are the obstructions or walls established on the path of river water to collect water is artificial lakes to use for the generation of electricity and irrigation.
- Check dams are temporary mud walls or permanent was created to collect water in artificial lakes to recharge underground water.
- Underground water is important for irrigation and drinking purposes.
- Building big dams create lot of problems related to biodiversity, forest area and displacement of population. In water shed management soil and water conservation are preferred to increase the vegetation.
- Fossil fuels like coal and petroleum should be used very carefully because the stocks of these are remained very limited under the soil. Also these cause pollution on burning.
Some important definitions
1. Natural Resources. The useful naturally occurring stocks of different substances are termed as natural resources.
2. Exhasutible Resources. The resources being destroyed by human activities are called exhaustible resources. Example—soil, minerals, etc.
3. Inexhaustible Resources. The resources which cannot be exhausted by human activities are called inexhaustible resources.
4. Renewable Resources. The sources of energy which can be replenished are termed as renewable resources, e.g. wood, water.
5. Non-renewable Resources. The sources of energy which cannot be replenished and get destroyed after their use are termed as non-renewable resources, e.g. Petroleum, Natural gas, Coal etc.
6. Underground water. Water present under the surface of soil.
7. Pollution. Presence of unwanted, unnecessary and undesirable changes in biological, physical and chemical characteristics of environment is termed as pollution. Mainly pollution is of three types-soil pollution, air pollution, water pollution.
8. Recycle. Using products made of plastic, paper, glass, metal etc. in making new products instead of new material is called recycle.
9. Reuse. It is a simple strategy to use things again and again instead of throwing away.
10. Water Harvesting. It is a process of capturing used or rain water in a nearby area to utilise it for our use again and increase the level of underground water.
11. Biodiversity. Different types of living beings exist in this world. A very large variety of plants and animals are parts of it. Out of these some are of economic importance. Their structures and usefulness vary. The existence of wide variety of species living in a particular natural habitat or community is termed as biodiversity.
12. Conservation. It is a process to prevent our environment from degradation and to work for its betterment by improving the conditions to stop further deterioration.
13. Ganga Action Plan. A multicrore project proposed by Govt. of India in 1985 to clean river Ganga of its pollutants.
14. Coliform Bacteria. Coliform is a group of gram-negative bacteria that causes many diseases in human intestines. Its presence in water indicates contamination of disease causing micro-organisms.
15. 3-R. Reduce, Recycle, Reuse.
16. Wild life. All types of naturally occurring plants and animals and their species found in nature are termed as wild life. It is neither cultivated nor tamed/domesticated.
17. Ecological Conservation. ‘Ecological Conservation’ is a term used to conserve nature and natural resources to maintain ecological balance.
18. Water Resources. The resources like rivers, canals, oceans, rains etc. are called water resources which provide water for our use.
19. Water Shed Management. It is the scientific conservation of soil and water to get better and increased biomass production.
20. Water Harvesting. Water harvesting is to capture and save rain water to make use of it for better purposes.
21. National Park. A very large specified area reserved and dedicated by government to conserve natural resources, forests, wild life where human activities are completely banned is called National Park.