Summarize the points made in the lecture, being sure to explain how they challenge the specific arguments presented in the reading passage.

Both lecture and the reading are discussing the cause of the

decline

of sea otters. The former is of the opinion that causes of predation

decline

. While the latter provides three points to support his belief about sea otter extinction.

To begin

with, the

first

issue we encounter is associated with pollution theory. The speaker highlights

this

theory is not convincing due to the fact that pollution theory is leakage by no one can find it.

Moreover

, he demonstrates his point by saying that if infection kills otter, the fact consistence predator is a hypothesis.

On the other hand

, the text posits that the experiment from water in that area showed that increased levels of chemicals could decrease the otters' resistance to death.

Moreover

, another topic of the debate revolves around other mammals hunting whales. Once again the professor points out that whale disappears because of humans hunter.

Besides

, he illustrates his point by mentioning that they had to change their diet to survive.

Additionally

, he provides that orca is available.

However

, the article confirms that whatever had endangered the otters was affecting other sea mammals as well. To wrap things up, the final point in the discussion is connected to the uneven pattern of otter

decline

. The instructor suggests that it depends on the location where they live. What's more, he explains that those location access

decline

because large cannot access the shallow rocky location.

Nevertheless

, the passage states that ocean currents or other environmental factors may have created uneven concentrations of pollutants along the coast.