Рубрика:
65
4) The term “carbon neutral” refers to the fuels that don’t produce carbon dioxide
during the process of burning.
5) Biofuels based on organic oils and sugars usually require precise processing.
6) Developing countries are likely to profit from using biofuel more than the Great
Powers.
7) Growing crops for fuel may result in starvation in developing countries.
8) Using biofuels may indirectly cause great ecological problems.
9) Growing raw material for biofuel on marginal land is a perspective way of
granting food security.
10) According to the article, termites are thought to be a perspective component of
biofuels.
11) All biofuels are “green” by default.
Task 3. Choose the correct item.
• The idea behind biofuels is simple: any carbon relising/released when they
burn should be balancing/balanced by the carbon absorbing/absorbed during
the growth of the plants that are their raw material, making/made them carbon
neutral.
• Turning/turned food crops into fuel creates financial competition between rich
consumers wanting/wanted fuel and poor consumers wanting/wanted food, for
both the crops themselves and the land using/used to grow them.
• Creating/created palm oil plantations destroys land with some of the highest
biodiversity in the world, and contributes to the loss of habitat of many animals
including/included the orangutan, which is threatening/threatened with
extinction, as it loses habitat and is also killing/killed as a pest of the young oil
palms.
• Much research has been done and is ongoing to overcome these problems:
avoiding/avoided dependency on food crops, and increasing/increased the
efficiency of fuel production to reduce the amount of land requiring/required.
• This contributes to their improving/improved efficiency – for example, a 50%
reduction in emissions is achieved using/used ethanol producing/produced
from grasses growing/grown on the American prairies comparing/compared to
20% from corn
Task 4. Find the key words in each paragraph.
Task 5. Topics for discussion:
1. What pro and contra does biofuel have?
2. What different types of fuel cells do you know?
3.
What do yousuppose to be fuel of the future?
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