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Câu trả lời:

Renewable energy or renewable energy is energy from renewable sources that are indivisible, such as solar, wind, rain, tides, waves and geothermal energy. The basic principle of using renewable energy is to extract some of the energy from continuous processes in the environment and put it into technical use. These processes are often promoted especially from the Sun. Renewable energy replaces traditional fuels in four areas: electricity generation, hot water heating, engine fuels, and rural independent power systems.
With 9 clean energy sources for future use
1. Fuel cell.
This is a technique that can provide human energy without emitting CO2 or other toxic waste. A typical fuel cell can generate direct electricity by reacting hydrogen and oxygen. Hydrogen can be obtained from many sources such as natural gas, methane from organics waste and from non-burning so they do not have toxic emissions.
2. Solar energy
Solar power transmission.
3. Energy from the ocean.
This is an extremely rich source of energy, especially in large marine areas. Waves and tides are used to spin turbines. Power sources can be used directly for marine equipment such as lighthouses, buoys, wharves, navigation systems
4. Wind power
Wind energy is considered to be a great source of green energy, abundant and available everywhere. One could use wind to spin the turbines.
5. Vegetable waste oil used to drive cars
Vegetable oil when discarded, if not utilized, will cause great waste and pollute the environment. To overcome this situation, a Japanese company called Someya Shoten Group in Sumida Prefecture in Tokyo has recycled these oils for soaps, fertilizers and VDF oils without sulfur oxide residue. From black waste to only one third compared to traditional oils.
6. Energy from snow
Japan's Bihai Natural Energy Research Association has succeeded in applying snow to freeze warehouses and air conditioners in buildings in hot weather. According to this project, snow is stored in warehouses to keep the storage temperature from 0oC to 4oC. This is the ideal temperature for preserving agricultural products, thus reducing production costs and reducing production costs.
7. Energy from bio-fermentation
This energy source is generated by the bio-fermentation of domestic waste.
8. Geothermal energy
This is the source of energy deep in the heart of the islands, volcanoes. This source of energy can be obtained by draining hot water from thousands of meters underground to run an electric turbine.
9. Methane hydrate
Methane hydrate is considered to be a potential source of deep underground energy, white as ice, the culprit for gas congestion, and is known as "ice can burn". Methane hydrate is a crystalline substance composed of water and methane, which is stable at low temperatures and high pressures, most of which are found beneath the permafrost and deep layers beneath the Great Depression. Positive and a good substitute for oil and coal.

The advantage of this energy source is that it is clean, available in nature, polluted, not exhausted and is the best solution to save fossil fuels for the future.

Câu trả lời:

In the family, because you are the youngest son, everyone loves you very much, but the mother is the one who groomed you the most.
This year, her mother was nearly forty-one years old. With slender, slender body was highlighted to her mother with the beauty of gentle mother, smooth hair that people can cut their fingers when folded when the road. Black mother eyes always look at me with late eyes. The face with the left left with the white skin. When laughing at his mother like flowers, it is early morning roses. Two handbook handsome, whites of kids, dreds from the mail. The voice of the mother's feeling, felt like a lullaby, when humming like a young bird. Mother can and a lot of beauty, especially the dress, mother often wear or model, while studying mother in long dress can also make her mother can look graceful, luxurious.
At home, she is a housewife. Mother assigned to the light work such as sweeping home, clothes folding ... Mother, toilet items, clean the door will be clean, delicious shopping at the guest house for beautiful home. Each customer will always welcome warmly, invite the factory and cool water plants. Morning mother who is up early to prepare breakfast for the whole family, so that the two brothers go together with school books. When the baby hurts overnight to take care. In the evening, often about thirty minutes to tell the children, then the mother sitting, standardized education for tomorrow's class at school ... Mother very kind, kind, As well as children, also help out so many mother so many students love. When the mistake, she just reminded not scolded and also did not fight.

She is so adorable, always loves her mother and is proud to be her mother. Whenever I was hugged by my mother, my heart felt warm. In my heart, you are everything, my mother is the first in my life ... I hope to grow to be able to help her mother harder. I promise to take good care and try to learn to answer her and teachers taught, raising people to people. Mom, I love you so much!