02/05/2024

02/05/2024
02/05/2024
Question 55: What does the passage mainly discuss?
A. The variety of species found in tropical rain forests
B. The cause of the extinction of the dinosaurs
C. The time required for species to adapt to new environments
D. The impact of human activities on Earth’s ecosystems
Answer: D. The impact of human activities on Earth’s ecosystems
Explanation: The passage primarily focuses on the impact of human activities on Earth's ecosystems, particularly their role in causing biological devastation.
Question 56: The word “critical” is closest in meaning to
A. essential B. negative C. complicated D. interesting
Answer: A. essential
Explanation: In this context, "critical" means essential or crucial. The passage discusses biological diversity as an important conservation issue.
Question 57: The word “jolting” is closest in meaning to
A. illuminating B. unknown C. shocking D. predicted
Answer: C. shocking
Explanation: "Jolting" means causing shock or surprise, which fits the context of the high rate of species extinctions in tropical rain forests.
Question 58: The author mentions the reduction of the variety of species on Earth in line 7-8 to suggest that
A. humans are often made ill by polluted water
B. new habitats can be created for species
C. some species have been made extinct by human activity
D. understanding evolution can prevent certain species from disappearing
Answer: C. some species have been made extinct by human activity
Explanation: The reduction of the variety of species on Earth suggests that some species have been made extinct by human activity, aligning with the discussion on the impact of humans on Earth's ecosystems.
Question 59: The author mentions all of the following as examples of the effect of humans on the world’s ecosystems EXCEPT
A. damage to marine ecosystems
B. habitat destruction in wetlands
C. the introduction of new varieties of plant species
D. destruction of the tropical rain forests
Answer: C. the introduction of new varieties of plant species
Explanation: The passage discusses habitat destruction, damage to marine ecosystems, and destruction of tropical rain forests as examples of the effect of humans on ecosystems, but it does not mention the deliberate introduction of new plant species.
Question 60: The author mentions the extinction of the dinosaurs in the 2nd paragraph to emphasize that ________________
A. not all mass extinctions have been caused by human activity
B. actions by humans could not stop the irreversible process of a species’ extinction
C. Earth’s climate has changed significantly since the dinosaurs’ extinction
D. the cause of the dinosaurs’ extinction is unknown
Answer: A. not all mass extinctions have been caused by human activity
Explanation: The author mentions the extinction of the dinosaurs to highlight that mass extinctions have occurred in Earth's history due to various causes, not solely human activity.
Question 61: The word “magnitude” is closest in meaning to __________.
A. carelessness B. extent C. determination D. concern
Answer: B. extent
Explanation: "Magnitude" refers to the great size, extent, or importance of something.
Question 62: According to the passage, natural evolutionary change is different from changes caused by humans in that changes caused by humans __________.
A. affect fewer ecosystems B. are occurring at a much faster rate C. are reversible D. are less devastating to most species
Answer: B. are occurring at a much faster rate
Explanation: The passage states that human-induced changes are occurring at a much faster rate than natural evolutionary change.
Question 63: Which of the following can best replace “in flux” ?
A. breaking B. producing C. changing D. increasing
Answer: C. changing
Explanation: "In flux" means in a state of continuous change or fluctuation.
Question 64: With which of the following statements would the author be most likely to agree?
A. The extinction of a few species is an acceptable consequence of human progress.
B. Technology will provide solutions to problems caused by the destruction of ecosystems.
C. Human influence on ecosystems should not be a factor in determining public policy.
D. Humans should be more conscious of the influence they have on ecosystems.
Answer: D. Humans should be more conscious of the influence they have on ecosystems.
Explanation: Throughout the passage, the author highlights the negative impact of human activities on Earth's ecosystems and the need for awareness and conservation efforts. Therefore, the author would most likely agree that humans should be more conscious of their influence on ecosystems.
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