The material discusses how people can control the multiplication of the cane toad in Australia. While the reading suggests three solutions to this unfortunate issue, the listening disagrees and states that all the measures that have been proposed by the reading passage are unsuccessful and cause environmental damages.
First, the writer posits that building a national fence can stop the spread of the toads. On the other hand, the professor opposes this and points out that this fence could not stop the distribution of the toads. The lecturer explains that young toads and eggs are found on river and stream, so the flow can carry them from one side to the other side to establish the population on both sides.
Second, the author states that volunteers can catch toads and destroy them. On the contrary, the lecturer refutes this and contends that untrained volunteers can not distinguish between the young toads and the native frogs. According to the lecture, these frogs are already endangered species.
Third, the reading mentions that researchers can introduce a virus and diseases the toads and kill them. Conversely, the professor encounters this and states that this disease can reach the origin place of the toads, which is South America. The speaker explains that many reptiles are transported by researchers from one plane to another. The professor adds that if one infected toad reaches South America could have devastating consequences because the toads are native species at this place. The lecturer says that toads are playing a vital role in the South America ecosystem, so if they are eliminated the whole ecosystem will suffer.
The material discusses how
people
can control the multiplication of the cane
toad
in Australia. While the reading suggests three solutions to this unfortunate issue, the listening disagrees and states that all the measures that have
been proposed
by the reading passage are unsuccessful and cause environmental damages.
First
, the writer posits that building a national fence can
stop
the spread of the
toads
.
On the other hand
, the professor opposes this and points out that this fence could not
stop
the distribution of the
toads
. The lecturer
explains
that young
toads
and eggs
are found
on river and stream,
so
the flow can carry them from one side to the other side to establish the population on both sides.
Second, the author states that volunteers can catch
toads
and
destroy
them.
On the contrary
, the lecturer refutes this and contends that untrained volunteers can not distinguish between the young
toads
and the native frogs. According to the lecture, these frogs are already endangered species.
Third, the reading mentions that researchers can introduce a virus and diseases the
toads
and kill them.
Conversely
, the professor encounters this and states that this disease can reach the origin place of the
toads
, which is South America. The speaker
explains
that
many
reptiles
are transported
by researchers from one
plane
to another. The professor
adds
that if one infected
toad
reaches South America could have devastating consequences
because
the
toads
are native species at this place.
The
lecturer says that
toads
are playing a vital role in the South America ecosystem,
so
if they
are eliminated
the whole ecosystem will suffer.