▶ Your Answer :
In
the reading passage there is ample support to the author’s claim that average
temperatures in the world have raised and researchers have proposed plausible
theories explaining this event. However, the professor in the lecture gives
several reasons as a rebuttal to the reading passage’s point.
First
of all, the speechmaker insists that landfills are not a significant factor to
increase the earth temperatures. Some studies conducted by scientists have
shown that methane released by human is small compared to other contributors.
Considering the low proportion of toxic gas made from landfills, it is hard to
say that the zones are responsible for global warming. This casts doubt on the
reading passage’s argument that creating landfills is one of the reasons for
temperature rise.
Second,
the speaker in the lecture contends that the deforestation theory is not
plausible. Think about carbon dioxide cycle. It is not matched with real. This
is because wooden stuffs such as furniture which people use always contain CO2,
not release to the atmosphere. This counters the reading passage’s assertion
that increasing carbon dioxide derived from deforestation is a key factor of
global warming.
Finally,
the lecturer says that a cycle of climate change is doubtful. Depending on
place to place, Temperatures in the earth highly varied. For example, when the
north part in the planet is hot, the south is cool more. This refutes the
reading passage’s suggestion that global warming is correlated with a cycle of
climate.
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