Answer the following questions to write a paragraph on 'Renewable Energy'.
(a) What is our source of energy? (b) What is renewable energy? (c) Why is it needed? (d) What are the different sources of energy? (e) How can we get them?
RENEWABLE ENERGY
Our source of energy is electricity. Renewable energy means the energy that can be restored to original condition. It is one that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat. About 16% of global final energy consumption comes from renewable resources. Because huge amount of energy is consumed everyday and the age of oil and natural gas will come to an end. And to meet the crisis, we need alternative sources. Solar energy is renewable. Solar energy units can be installed on open rooftops or at any open place where sunlight is available. Wind energy captured with wind turbines can produce electricity. Sunshine and the wind can turn water into an energy called hydroelectric energy. We can have bio-energy from bio-mass of plants. Hydrogen is a source of energy. If hydrogen is separated from another element, it can be burned as a fuel to produce electricity. We can get geothermal energy from inside the earth. We can have ocean energy from the tide and waves of the ocean. Temperature on the surface of the ocean can be used as a source of energy. However, renewable energy provides 19% of electricity generation worldwide. Renewable power generators are spread across many countries, and wind power alone already provides a significant share of electricity in some areas. On the pthef hand, solar hot water makes an important contribution to renewable heat in many countries. Renewable biofuels have contributed to a significant decline in all consumption. But it is true that all the renewable energies come from neutral sources.
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