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Otter Population Declination

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Otter Population Declination
The main topic of both the reading and the lecture is about possible explanations for the cause of declining sea otters population. According to the reading, environmental pollution is the main reason for this phenomenon. The lecture, on the other hand, finds this hypothesis questionable and claims that attacks by predators is a better explanation for otter population declination. The lecture also provides three reasons to repudiate what is mentioned in the passage.

First, the reading states that there are polluting sources, such as oil rigs, in the region otters live; in addition, water samples illustrate the increased level of chemicals decreasing the otters' resistance to life-threatening infections. For this reason, pollution theory is
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