Ask questions which are clear, concise and easy to understand.
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Yogita Ingle 6 years, 4 months ago
Algebraic Expression Definition: An algebraic expression in mathematics is an expression which is made up of variables and constants along with algebraic operations (addition, subtraction, etc.) Expressions are made up of terms.
Example of algebraic expression:
3x+4y -7, 4x – 10 etc.
Posted by Preeti Kaur 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Inexhaustible Natural Resources: Some natural resources are available in huge quantity and cannot be finished by human activities. Such resources are called inexhaustible natural resources, e.g. air, water, sunlight, etc.
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Yogita Ingle 6 years, 4 months ago
Here a story has been given below for an example: An Adivasi group lived in a village. They lived there peacefully and used to fulfil their needs from the land and the forests around them. One day a few strangers reached their village along with a government document and announced that the land where Adivasis were living belonged to Mr. Sharma (an industrialist). So they will have to vacate the village because Mr. Sharma wanted to establish an industry over there. When Adivasis did not agree to leave their land, they were humiliated and tortured Mr. Sharma finally decided to visit the- village personally and tried to settle the deal by offering some money to them. While coming to the village with his son, his car met with an accident in which he was badly injured and his son fell into the valley, but was saved. When Mr. Sharma opened his eyes, he saw himself surrounded by some villagers. He came to know that they saved the life of his son with the help of medicinal herbs available in forests. Mr. Sharma learnt that those people belonged to the same Adivasi group whom he wanted to abandon from their land. Finally, Mr. Sharma begged apology from the Adivasis and withdrew his idea of locating an industry in the village. He realized that it would not be justified to ruins the life of those who saved his son's life.
Posted by Revender Kumar Kumar 6 years, 4 months ago
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Sneha Agrawal 6 years, 4 months ago
Yogita Ingle 6 years, 4 months ago
Reduce
Reducing waste is the most important thing we can do. By reducing waste, we avoid the unnecessary use of resources such as materials, energy and water. It means there is less waste to manage.
Reuse
The next most important thing we can do is reuse waste material. That way it doesn't go in the rubbish and end up in the landfill. It also means you don't have to buy a new product. That saves you money and saves the energy and resources that would have been used to make the new product.
Recycle
Recycling involves some form of reprocessing of waste materials to produce another product. For example, recycling plastic bottles to make buckets.
Recover
This is the recovery of waste without any pre-processing. For example, waste oils that cannot be refined for reuse in vehicles can be burnt for energy recovery. Recovering the energy from waste oil reduces our dependence on coal and imported oil.
Residual Management
This is the last option when waste cannot be used in any other way. Usually, this means sending rubbish to a landfill. Residual disposal of liquid waste is normally into a sewer or septic tank.
It is very important to manage residual solid and liquid waste properly. Waste not disposed of correctly can cause damage to health and the environment.
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Sneha Agrawal 6 years, 4 months ago
Yogita Ingle 6 years, 4 months ago
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