This question set takes more time than I've expected. I feel like the questions, not the article, is the toughest. Question 1: AQuote:
1. The author's primary objective in discussing hypoxic zones is to explain how they
A. compromise the health of marine ecosystems.
B. contribute to the extinction of certain marine life.
C. alter the chemical composition of ocean habitats.
D. have been linked to altered gene expression in fish.
E. are depleted of oxygen over long periods of time.
The question is looking for the
main goal of discussing "hypoxic zones"
A --> looks good
B -->
"extinction" is not explicitly mentioned in the passage. It seems to me
going to farC -->
"alter the chemical composition" --> not the focus (the focus should be the "influence" of the change)
D -->
"gene expression" --> not mentioned
E --> definitely not the focus
Question 2: BQuote:
2. The passage implies that fish that can survive in hypoxic zones
A. have developed a tolerance for anoxia as the species evolved.
B. belong to species that are indigenous to less oxygenated areas of the ocean.
C. suffer damage that is more apparent in their offspring than in themselves.
D. must move to healthier waters in order to reproduce.
E. rely on a biological self-defense mechanism to compensate for the oxygen depletion.
Ask for the "lucky fish"
A --> not sure if
"anoxia" is mentioned in the passage (not within my knowledge)
C -->
"The females that do survive their deadly habitat may therefore either be functionally infertile or may produce offspring that are biologically ill equipped to contribute to population growth and help ensure survival of the species." Can't deduct which one suffers more damage
D --> nope, the article instead states "but they escape to unfamiliar habitats where they are less capable of defending themselves against predators and are less likely to be fertile."
E -->
self-defense mechanism? seems like a new idea...
B can be traced back to "the infertility is linked directly to the lack of oxygen in the environment from which they escaped" =
belong to species that are indigenous to less oxygenated areas of the ocean --> therefore, it's the answer
Question 3: DQuote:
3. The first paragraph primarily performs which of the following functions in the passage?
A. It links compositional changes in ocean water to irresponsible human behavior.
B. It explains how environmental damage can cause effects that last for generations.
C. It stresses that oxygen levels are paramount in determining ocean survival rates.
D. It pinpoints the cause of species destruction in specific marine habitats.
E. It argues that survival in the changing ocean depends on genetic factors.
A --> definitely no (the concept of
"irresponsible human behavior" is not mentioned)
B --> It seems to me more like what the second paragraph is talking about
C -->
"ocean survival rates" is somewhat different from
"infertility rate". thus, I would not prefer this answer
E -->
"genetic factors" are not mentioned in the first paragraph
D --> the cause = hypoxic; specific marine habitats =
"marine species that require abundant oxygen to survive" seems good!