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Meghna Thapar 5 years, 7 months ago
- The poor in the village/rural areas do not earn much money to meet their both ends or to survive with the little money they earn.
- They spend a lot of time on collecting firewood from forests, fetching water from distant bore well and grazing their cattle.
- These activities also save their money and fulfil their several needs.
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Meghna Thapar 5 years, 11 months ago
The steps to make buildings and monuments accessible to differently abled people are:
(1) Construction of a ramp.
(2) The steps can be renovated, so that people may not fall on the slippery ground.
(3) Railing can be placed on the side walls of the staircase.
(4) Proper lighting system.
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Meghna Thapar 6 years ago
When we breathe in, the ribs are lift up and the diaphragm flattens which increases the size of the chest cavity. Because of this, air is sucked into the lungs and fills the expanded alveoli. When we breathe out, the ribs flatten and the diaphragm lifts up which decreases the size of the chest cavity. Because of this, air is expelled out from the lungs.
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Meghna Thapar 6 years ago
Any tax imposed with the aim of regulating activity in a way that benefits the environment is called green tax.
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Meghna Thapar 6 years ago
We prefer using plastic materials for storing a food item, water, milk, pickles, dry food etc., as plastic containers seem most convenient to use. This is due to the following properties of plastics:
- Plastic is non-reactive: Unlike iron, plastics do not corrode easily. It does not react with air, water or any chemical so it is safe to store many kinds of materials including chemicals.
- Plastic is light, strong and durable: Plastics have low density so they are lighter than metals. They also have good strength and are durable. It is because of the low price, easy availability, lightweight, corrosive resistant, the plastic containers are preferred for making household articles.
- Plastics are poor conductors: Plastics are poor conductors of heat and electricity. That is why electrical wires have plastic covering, and handles of screw drivers are made of plastic.
Posted by Swapnil Sharma 6 years ago
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Meghna Thapar 6 years ago
Plastic is very useful because of the following properties:
- Plastic is non-reactive: Unlike iron, plastics do not corrode easily. It does not react with air, water or any chemical so it is safe to store many kinds of materials including chemicals.
- Plastic is light, strong and durable: Plastics have low density so they are lighter than metals. They also have good strength and are durable. It is because of the low price, easy availability, lightweight, corrosive resistant, the plastic containers are preferred for making household articles.
- Plastics are poor conductors: Plastics are poor conductors of heat and electricity. That is why electrical wires have plastic covering, and handles of screw drivers are made of plastic.
However, the use of plastic articles is not good for the environment
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Meghna Thapar 6 years ago
The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
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