Te 8 ruscha indd

7 0
U N IT 9
THE E N VIR O N M EN T

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LESSON 2 What are alternative sources to fossil fuels?
1 a Listen and re p e a t th e new w o rd s .
windmill, alternative (adj)
1 b W o rk in p a irs. A n sw e r th e q u e s tio n .
What are alternative sources of energy to fossil fuels?
2 a W ork in pairs. M atch the sources o f energy to pictures.
a) fossil fuels b) nuclear power c) water power
d) wind power e) waste-to-energy f) solar power
Listen to th e te x t and say w h ich so u rc e s o f 
e n e rg y are m od ern o r o ld .
Listen to th e te x t one m ore tim e and co m p le te
th e ta b le a b o u t th e s o u rc e s o f e n e rg y.
2 d W o rk in g ro u p s o f fo u r. D iscuss th e q u e s tio n .
Which of the alternative sources can be used in Uzbekistan? Why?
3 a W o rk in p a irs. Read and m atch th e title s to te x ts a b o u t b io ­
fu e ls . One title is e x tra .
a) Reduce greenhouse gases b) Cheaper fuel c) Benefits for ecosystem
d) Benefits from plants e) Growing economy f) Environmentally friendly
A d va n ta g e s o f B io fu e ls
1) Biofuels can be used with all kinds of engines and in most conditions. 
This keeps the engine use longer and needs less care, which saves money. 
Moreover, they are becoming cheaper in the future.
2) Biofuels are made from many different sources, such as plants grown 
for the fuel, and waste from crops. Fossil fuels will end sometime in the 
near future. Waste from crops and plants are renewable and are not likely 
to run out soon. These crops can be planted again and again.
3) Fossil fuels produce greenhouse gases in the atmosphere. These 
greenhouse gases cause the planet to warm. The burning of coal and oil 
increases the temperature and causes global warming. To reduce green­
house gases, people around the world are using biofuels. Scientists say 
that biofuels reduce greenhouse gases up to 65 percent.
4) Not every country has much oil. If a country starts using biofuels, this 
country will be able to develop its economy. More jobs will be created with 
a biofuel industry. It will keep economy strong.
5) Since biofuels are made of renewable resources, they are cleaner 
fuels. It means that they produce less dangerous waste and cause less 
pollution to the planet.
3 b W o rk in p a irs o r in g ro u p s o f fo u r. D iscuss th e q u e s tio n .
Are there any disadvantages in using biofuels? What are they?