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We can save energy by doing some following tips. First of all, we should use electricity more efficiently and reduce our electricity bill. We need to turn off the TV when we are not watching, turn off all the lights before going to bed. Besides, we should not leave the fridge door open in a long time due to wasting of electricity. Moreover, we should save water by taking showers instead of baths or turning off the water when you don not use it. The next tip is reducing the use of fossil fuels like gas, coal, and oil. It is not only saving energy but also protect our environment. To do this, we can use public transport and avoid using car or motorbike for short trip. All in all, because our energy is limited we need to reserve it for the future generations.
Non-renewable energy is energy that cannot be regenerated after use
Renewable energy is energy that can be regenerated after use and replaceable
Example
Non-renewable energy: coal, nuclear, natural gas
renewable energy: solar energy,wind energy,hydro
"Năng lượng không tái tạo" và "năng lượng tái tạo" nghĩa là gì? Đưa ra vài ví dụ
There are some tips to save power which I think are very easy to apply. Firstly, we should use energy saving light bulbs in our house. It will help us to reduce our electricity bill. Secondly, we should use public transport if we need to go long distance. We can use bicycles for short distances. I think it is good for our health and economical. And remember, before going to bed, we should turn off all lights and other unused electrical devices. It's an easy way to save our planet.
I. Read the passage and choose the best answer A, B, C or D to complete the passage.
The natural environment includes all natural resources that are necessary for life: the air, the oceans, the sun, andthe land. Because they are vital for life, these resources must be protected from pollution and conserved. Ecologists study their importance and how to (1).......... them carefully.
According to ecologists, resources are divided into two groups: (2).......... and non-renewable. When a resource is used, it takes some time to replaceit. If the resource can be replaced (3)........., it is called renewable. If it cannot be replaced quickly and easily, it is non-renewable. For example, grass for animals is a renewable resource. When cows eat the grass, the resource is used. If the soil is fertilized and (4).........., more grass will grow. Coal, however, is non-renewable because it takes millions of years to make coal. All fossil fuels are non-renewable resources.
1. A. use B. be used C. used D. using
2. non-renewable B. renewable C. limited D. plentiful
3. A. easy B. difficultly C. quickly D. for a long time
4. A. protect B. protected C. protecting D. to protect
-Non-renewable: coal
+adventages: abundant, cheap
+disadventages: harmful, exhaustible
-Renewable: solar
+adventages: safe, unlimited
+disadventages: expensive
-Non-renewable: coal
+adventages: abundant, cheap
+disadventages: harmful, exhaustible
-Renewable: solar
+adventages: safe, unlimited
+disadventages: expensive