PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

This PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources will help you in revision during exams.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ Our natural resources like forests, wildlife, water, coal, and petroleum need to be used in a sustainable manner.

→ The variety of substances that man gets from earth and nature to meet his basic needs are called natural resources.

→ People’s participation is very important in maintaining the eco-environment.

→ Multicrore project “Ganga Action Plan” to clean and maintain the proper quality of water in the Ganga was launched in 1985.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ 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 the 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 is a 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 (useless), 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.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ Recycling always needs the consumption of some energy.

→ ‘Ganga Action Plan’ was started in 1985 because the quality of water was reduced to a very low level.

→ Coliform is a group of bacteria and is found in the human intestines.

→ The presence of coliform in water indicates contamination by disease-causing microorganisms.

→ 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 and cities in 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 of biodiversity is the number of species found there.

→ Forests are the favourite sites for fishing and hunting.

→ We can reduce pressure on the environment by applying the maximum of three R’s (Reduce, Reuse, and Recycle) in our lives.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ People gather fruits, nuts, and medicines from the forests and they also allow their cattle 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 the temperature of our bodies. 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.

→ The 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.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ Dams are the obstructions or walls established on the path of river water to collect water in artificial lakes to use for the generation of electricity and irrigation.

→ Check dams are temporary mud walls or permanent walls created to collect water in artificial lakes to recharge underground water.

→ Underground water is important for irrigation and drinking purposes.

→ Building big dams create a lot of problems related to biodiversity, forest area, and displacement of population.

→ In watershed 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 remain very limited under the soil. Also, these cause pollution on burning.

→ Natural Resources: The useful naturally occurring stocks of different substances are termed natural resources.

→ Exhaustible Resources: The resources being destroyed by human activities are called exhaustible resources.
Example: soil, minerals, etc.

→ Inexhaustible Resources: The resources which cannot be exhausted by human activities are called inexhaustible resources.

→ Renewable Resources: The sources of energy which can be replenished are termed renewable resources, e.g. wood, water.

→ 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.

→ Underground water: Water is present under the surface of the soil.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ Pollution. The presence of unwanted, unnecessary, and undesirable changes in biological, physical, and chemical characteristics of the environment is termed pollution. Mainly pollution is of three types – soil pollution, air pollution, water pollution.

→ Recycle: Using products made of plastic, paper, glass, metal, etc. in making new products instead of new material is called recycling.

→ Reuse: It is a simple strategy to use things again and again instead of throwing them away.

→ Water Harvesting: It is a process of capturing used or rainwater in a nearby area to utilize it for our use again and increase the level of underground water.

→ Deforestation: Cutting trees on large scale is called deforestation.

→ Dams: These are the obstructions on the paths of river water to store large amounts of water to be used to generate hydroelectric power and for irrigation purposes.

→ Afforestation: Planting of trees on large scale over a large area.

→ Environmental problem: The problems created by man on the environment by his actions.

→ 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 a wide variety of species living in a particular natural habitat or community is termed biodiversity.

→ 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.

→ Ganga Action Plan: A multicrore project proposed by Govt, of India in 1985 to clean river Ganga of its pollutants.

PSEB 10th Class Science Notes Chapter 16 Management of Natural Resources

→ Coliform Bacteria: A coliform is a group of gram-negative bacteria that causes many diseases in the human intestines. Its presence in water indicates contamination of disease-causing micro-organisms.

→ 3-R: Reduce, Recycle, Reuse.

→ Wildlife: All types of naturally occurring plants and animals and their species found in nature are termed wildlife. It is neither cultivated nor tamed/domesticated.

→ Ecological Conservation: ‘Ecological Conservation’ is a term used to conserve, nature and natural resources to maintain ecological balance.

→ Water Resources: The resources like rivers, canals, oceans, rains, etc. are called water resources which provide water for our use.

→ Watershed Management: It is the scientific conservation of soil and water to get better and increase biomass production.

→ Water Harvesting: Water harvesting is to capture and save rainwater to make use of it for better purposes.

→ National Park: A very large specified area reserved and dedicated by the government to conserve natural resources, forests, wildlife where human activities are completely banned is called National Park.

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