42. A scientist observes that a particular species of insect becomes more active in higher temperatures, particularly in the late afternoon. The scientist hypothesizes that this increased activity is due to decreased predation, as many of the insects predators are less active when temperatures rise. Which of the following pieces of evidence would best support the scientists hypothesis?
Answer: B
The best evidence supporting the scientist's hypothesis is that the number of predators observed in the area is significantly lower in warmer weather.
This observation directly correlates with the hypothesis, indicating that decreased predation during higher temperatures may indeed contribute to the increased activity of the insect species.
A) The predator population increases in regions with warmer climates.
This option contradicts the hypothesis since an increase in predator populations would likely lead to increased predation on the insect species, thereby reducing their activity rather than supporting it.
B) The number of predators observed in the area is significantly lower in warmer weather.
This evidence strongly supports the hypothesis, as it suggests that fewer predators are present during warmer temperatures, which could allow the insect species to become more active without the threat of predation.
C) The insects are less active during the hottest part of the day.
While this statement provides some insight into the activity levels of the insects, it does not support the hypothesis about predation. Instead, it suggests that temperature extremes might inhibit insect activity rather than explain their increased activity at higher temperatures.
D) The insects have thicker exoskeletons to endure colder temperatures.
This option is irrelevant to the hypothesis being tested. While it provides information about the insects' adaptations, it does not address the relationship between temperature, predation, and insect activity.
Conclusion
The evidence that the number of predators observed in the area is significantly lower in warmer weather directly supports the scientist's hypothesis regarding decreased predation and increased insect activity. Other options either contradict the hypothesis or do not address the key relationship between temperature and predation, making them less relevant to the inquiry.