Always telling the truth is the most important consideration in any relationship between people. Use specific reasons and examples to support your answer.
Both passage and lecture are about the decline in yellow cedar population, whereas the author argues the hypotheses for this decline, the lecturer disputes the main points made in the reading by providing three reasons: First of all, according to the reading, the recorded instances show insect parasites attack yellow cedar's bark or leaves, leading to the tree's decline. however, the lecturer states that the yellow cedar is much more resistant to these kinds of insects because they are saturated with a powerful chemical that is poisonous to beetles. in addition, these instances are related to dead, damaged, and sick trees. secondly, the author indicates that brown bears can be another assumption for cedar's decline. they cause the trees to become weakened by aggressive feeding behavior such as clawing to eat the cedar's bark that contains a lump of high sugar. Nevertheless, the lecturer illustrates that brown bears are not the main cause of the overall population decline across all lands because there are no bears on the island where the yellow cedar has reduced. finally, the author explains that yellow cedar might be suffered from freezing in cold winter, especially their frozen root damage would threaten the health of the whole tree as a result of the shifting in their root growth to winter instead of spring, caused by climatic changes. on the other hand, the lecturer refers to the low elevation with warm weather, where much more tree has declined than the high elevation with cold weather. this fact indicates that freezing damage could not be the main reason for the decline. in conclusion, although the reading tries to find pieces of evidence that explain the yellow-cedar decline, the three points made in the reading are effectively challenged by the lecturer.
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