He had spent __________ time writing an essay about how to save energy

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Nowadays, energy is being run out more & more. We need lớn save energy because nobody of us can live without energy. So why don"t we start to bởi vì it right in our trang chủ ?We have many ways khổng lồ save energy in our home. One of those ways is using electricity, water & gas economically. Such as we should turn off the light in room when we go out or in unnecessary situations, avoid wasting water, shut the kitchen stove when stop cooking.Besides, we should use electrical equipments which are energy - saving. Such as using lights & pansfans that have low capacity, or using equipments which reserve electricty. Not only vị these help us lớn save money but also they work effectively.In addition, we should frequently check electrical equipments in our home in order khổng lồ fix opportunely .In summary, we need khổng lồ save energy so that energy isn"t run out và continues to serve human"s life.

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Hello everyone, today I"d lượt thích to tell you some information about types và sources of energy. Energy is classified into two main groups: renewable & non-renewable.The energy generated from natural sources such as the sun, wind, rain, and tides is called renewable energy. They are plentiful & can be generated again and again. They also have low carbon emissions so they are considered green và environment-friendly. Moreover, using renewable energy can reduce your electricity bills. Unfortunately, solar energy can be only used during the daytime but not during night or the rainy season. Geothermal energy also can bring toxic chemicals beneath the earth"s surface khổng lồ the top và can create environmental changes.Non-renewable energy is the energy taken from other sources that are available on earth.They are limited and will run out in the future. They can"t be re-generated in a short time.Fossil fuels - natural gas, oil và coal - are examples of them. They are cheap & easy khổng lồ use. However, when burnt, they release toxic gases in the air so they cause serious environmental changes such as global warming. And the important thing is that non-renewable sources will expire someday.