write two advantages and two disavantages using wind and hydro energy
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Advantages of Wind Energy
1) Wind Energy is an inexhaustible source of energy and is virtually a limitless resource.
2)Wind Energy can be used directly as mechanical energy.
Disadvantages
1) Wind energy requires expensive storage during peak production time.
2)Wind energy can be harnessed only in those areas where wind is strong enough and weather is windy for most parts of the year.
Advantages of Hydroenergy
1)When in use, electricity produced by dam systems do not produce green house gases. They do not pollute the atmosphere.
2) Once a dam is constructed, electricity can be produced at a constant rate.
Disadvantages
1) People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their farms and businesses. In some countries, people are forcibly removed so that hydro-power schemes can go ahead.
2) Building a large dam alters the natural water table level. For example, the building of the Aswan Dam in Egypt has altered the level of the water table. This is slowly leading to damage of many of its ancient monuments as salts and destructive minerals are deposited in the stone work from ‘rising damp’ caused by the changing water table level.
1) Wind Energy is an inexhaustible source of energy and is virtually a limitless resource.
2)Wind Energy can be used directly as mechanical energy.
Disadvantages
1) Wind energy requires expensive storage during peak production time.
2)Wind energy can be harnessed only in those areas where wind is strong enough and weather is windy for most parts of the year.
Advantages of Hydroenergy
1)When in use, electricity produced by dam systems do not produce green house gases. They do not pollute the atmosphere.
2) Once a dam is constructed, electricity can be produced at a constant rate.
Disadvantages
1) People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their farms and businesses. In some countries, people are forcibly removed so that hydro-power schemes can go ahead.
2) Building a large dam alters the natural water table level. For example, the building of the Aswan Dam in Egypt has altered the level of the water table. This is slowly leading to damage of many of its ancient monuments as salts and destructive minerals are deposited in the stone work from ‘rising damp’ caused by the changing water table level.
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