The main topic of both the reading passage and the lecture is ethanol fuel, which is made from plants such as corn and sugar cane. The author of the passage suggests three reasons that the replacement to ethanol isn't practical. However, the lecturer casts doubt on these reasons by introducing ethanol's not a good alternative for fuel.
Firstly, the reading passage states the harmful effect of ethanol fuel on the atmosphere. Thus, it causes global warming because, when ethanol burned it releases carbon dioxide into the atmosphere. Moreover, this process wouldn't help to solve the worldwide problem at all. But, the lecture rebuts it by mentioning growing corn itself releases greenhouse gases. So, every growing plant absorbs carbon dioxide and minimizes the level of global warming.
Secondly, the author reveals the dramatic reduction of plants for feeding farm animals such as cows and chickens. Furthermore, nowadays in the USA for 10% of fuel needs they use 60% of the corn. Nevertheless, the professor rejects this by stating cellulose, which is used for the growing plant, is not eaten by animals. Thus, cellulose is the main component of plant cells. As a result, the amount of forage for animals wouldn't decrease.
Thirdly, the reading states that the price of ethanol fuel will never be able to compete with the price of gasoline. Currently, the similarity between costs is due to the help in the form of tax. So, If the United States government were to stop helping producers, the demand for ethanol fuel would increase. But, the lecture contradicts the idea by mentioning whenever the usage of ethanol increases, the prices would also be decreased. If lots of people consume it, costs will be drop. As a sum, increase production leads reduction of the charge.
The main topic of both the reading passage and the lecture is
ethanol
fuel
, which
is made
from
plants
such as corn and sugar cane. The author of the passage suggests three reasons that the replacement to
ethanol
isn't practical.
However
, the lecturer casts doubt on these reasons by introducing ethanol's not a
good
alternative for fuel.
Firstly
, the reading passage states the harmful effect of
ethanol
fuel
on the atmosphere.
Thus
, it causes global warming
because
, when
ethanol
burned it releases carbon dioxide into the atmosphere.
Moreover
, this process wouldn't
help
to solve the worldwide problem at all.
But
, the lecture rebuts it by mentioning growing corn itself releases greenhouse gases.
So
, every growing
plant
absorbs carbon dioxide and minimizes the level of global warming.
Secondly
, the author reveals the dramatic reduction of
plants
for feeding farm animals such as cows and chickens.
Furthermore
, nowadays in the USA for 10% of
fuel
needs they
use
60% of the corn.
Nevertheless
, the professor rejects this by stating cellulose, which is
used
for the growing
plant
, is not eaten by animals.
Thus
, cellulose is the main component of
plant
cells.
As a result
, the amount of forage for animals wouldn't decrease.
Thirdly
, the reading states that the price of
ethanol
fuel
will never be able to compete with the price of gasoline.
Currently
, the similarity between costs is due to the
help
in the form of tax.
So
, If the United States
government
were to
stop
helping producers, the demand for
ethanol
fuel
would increase.
But
, the lecture contradicts the
idea
by mentioning whenever the usage of
ethanol
increases, the prices would
also
be decreased
. If lots of
people
consume it, costs will be
drop
. As a sum, increase production leads reduction of the charge.