According to the passage there has been two main theories about the reasons why sea otter population started declining. The first theory is environmental pollution and the second theory is attacks by predators. Three main reasons to support the first theory where discussed in the passage and also based on the lecture, answers have been provided for each reason and all of aformentioned reasons and responses will be addressed in next paragraphs.
The first mentioned reason based on the first theory for atter declining was that there has been water samples that shows the polluted water in the area. The professor provides a solid example that if that was true then dead bodies of animal should've been found by the shore, while there was never anything found, on the other hand the fact that no dead bodies were found supports the second theory that states that the predators are the reason for population decline.
The second reason is that even if the predators were the reason of this trajedy, the effect should've been on other sea mammals as well, but the facts say otherwise. According to the professor the change of diet in orca actually may cause this phenamenon since the whales were in danger because of humans they left and then the orca needed to feed on sea otters.
Finally the third reason states that because the pollution is more concentrated on some areas and not on others, it explains that why the population density is lower in that areas. This claime is answered easily, since the predators tend to hunt where they can easily go and hunt, therefore the sea otter population in deep waters has declined but not in shallow waters where they can not go easily.
According to the passage there has been two main
theories
about the
reasons
why
sea
otter
population
started
declining. The
first
theory
is environmental pollution and the second
theory
is attacks by predators. Three main
reasons
to support the
first
theory
where discussed in the passage and
also
based on the lecture, answers have
been provided
for each
reason
and all of
aformentioned
reasons
and responses will
be addressed
in
next
paragraphs.
The
first
mentioned
reason
based on the
first
theory
for
atter
declining was that there has been
water
samples that
shows
the polluted
water
in the area. The professor provides a solid example that if that was true then dead bodies of animal should've
been found
by the shore, while there was never anything found,
on the other hand
the fact that no dead bodies
were found
supports the second
theory
that states that the predators are the
reason
for
population
decline.
The
second
reason
is that even if the predators were the
reason
of this
trajedy
, the effect should've been on other
sea
mammals
as well
,
but
the facts say
otherwise
. According to the professor the
change
of diet in orca actually may cause this
phenamenon
since the whales were in
danger
because
of humans they
left
and then the orca needed to feed on
sea
otters.
Finally
the third
reason
states that
because
the pollution is more concentrated on
some
areas and not on others, it
explains
that why the
population
density is lower in that areas. This
claime
is answered
easily
, since the predators tend to hunt where they can
easily
go and hunt,
therefore
the
sea
otter
population
in deep
waters
has declined
but
not in shallow
waters
where they can not go
easily
.