FREE OAR Reading Comprehension Question and Answers Flashcards

Read the following: 'The Pacific tree frog can change its skin color from green to brown over the course of several hours. Researchers believe this adaptation serves primarily as camouflage rather than temperature regulation, since the color changes correlate more strongly with background environment than with ambient temperature.' What evidence supports the researchers' conclusion?

Answer: Color changes align more with surroundings than with temperature shifts

The passage states color changes correlate more with background environment than temperature, supporting camouflage as the primary function.

A passage reads: 'Between 1900 and 1950, the average life expectancy in the United States rose from 47 to 68 years. Most historians attribute this dramatic increase not to advances in treating diseases but to improvements in sanitation, clean water access, and public health infrastructure.' The passage suggests that:

Answer: Preventive public health measures were more impactful than curative medicine in extending life expectancy

The passage credits improvements in sanitation and public health infrastructure, which are preventive measures, as the primary drivers rather than disease treatment.

Consider this excerpt: 'The company's quarterly earnings exceeded analyst expectations by 15%, yet its stock price dropped 3% the following day. Market observers noted that the company's forward guidance suggested slower growth in the coming year.' What explains the apparent contradiction described in the passage?

Answer: Investors reacted to projected future performance rather than current results

The passage explains that despite strong current earnings, the stock fell because forward guidance predicted slower future growth.

Read the passage: 'Contrary to popular belief, medieval Europeans did not commonly believe the Earth was flat. Ancient Greek calculations of Earth's circumference were well known to educated medieval scholars, and navigational practices of the era relied on the assumption of a spherical Earth.' The author's tone in this passage is best described as:

Answer: Corrective, addressing a common misconception

The author directly counters a popular misconception by presenting historical evidence that medieval scholars understood Earth was round.

A passage states: 'The introduction of wolves into Yellowstone National Park in 1995 produced a cascade of ecological effects. Elk populations declined, which allowed overgrazed willows and aspens to recover. The regrown vegetation stabilized riverbanks, ultimately altering the physical course of streams.' This passage best illustrates which concept?

Answer: How a single species change can trigger widespread ecosystem effects

The passage traces a chain reaction from wolf reintroduction through elk reduction, vegetation recovery, and stream alteration, showing cascading ecosystem effects.

Read the following: 'Some economists argue that automation will create more jobs than it eliminates, pointing to historical precedents like the Industrial Revolution. Others counter that the pace and scope of artificial intelligence differ fundamentally from previous technological shifts, making historical comparisons unreliable.' Based on the passage, the two groups of economists primarily disagree about:

Answer: Whether historical patterns of technological change apply to modern AI

The core disagreement is whether past technological transitions are valid models for predicting AI's impact on employment.