The professor revises the idea presented in the passage that there are several doubts about the beehive-like fossil structures found in Arizona to be bee nests and refutes each of the points made in the reading.
First of all, the author states that the fossils of actual bees date to 200 million years ago have never been found. The professor confirms this statement, but she explains this fact does not mean that bees did not exist at that time. She clarifies that bees need the resin, which is a sticky liquid produced in special trees, to be preserved. Due to the fact that these trees were very rare, it could have been very hard for bees to remain preserved and turn into fossils. So, the first theory does not hold true due to the lack of compelling evidence.
Secondly, according to the text, 200 million years ago, flowering plants did not exist. Since bees have a mutual relationship with flowering plants, they did not exist, too. The professor asserts that bees could have been feeding on non-flowering plants like ferns before the evolution of flowering plants and changed their food after the advent of them. Therefore, the second theory has some deficiencies regarding the main point of the passage.
Finally, the professor acknowledges that the fossilized structures lack the spiral pattern of modern beehives’ caps, but she holds this view that chemical analysis proves that the structures are bee nests. This is because there is a special waterproofing material in the fossils that are found in the modern nests, too. Thus the third theory is not convincing as well.
The
professor
revises the
idea
presented in the passage that there are several doubts about the beehive-like
fossil
structures found in Arizona to be bee nests and refutes each of the points made in the reading.
First of all
, the author states that the
fossils
of actual bees date to 200 million years ago have never
been found
. The
professor
confirms this statement,
but
she
explains
this fact does not mean that bees did not exist at that time. She clarifies that bees need the resin, which is a sticky liquid produced in special trees, to
be preserved
. Due to the fact that these trees were
very
rare, it could have been
very
hard
for bees to remain preserved and turn into
fossils
.
So
, the
first
theory does not hold true due to the lack of compelling evidence.
Secondly
, according to the text, 200 million years ago, flowering
plants
did not exist. Since bees have a mutual relationship with flowering
plants
, they did not exist, too. The
professor
asserts that bees could have been feeding on non-flowering
plants
like ferns
before
the evolution of flowering
plants
and
changed
their food after the advent of them.
Therefore
, the second theory has
some
deficiencies regarding the main point of the passage.
Finally
, the
professor
acknowledges that the fossilized structures lack the spiral pattern of modern beehives’ caps,
but
she holds this view that chemical analysis proves that the structures are bee nests. This is
because
there is a special waterproofing material in the
fossils
that
are found
in the modern nests, too.
Thus
the third theory is not convincing
as well
.