Scientists interested in the change in horn length associate…
Scientists interested in the change in horn length associated with hunting pressure between 1973 and 1996 among male bighorn sheep in Canada examined the change in horn length during that time, as well as following the ban of hunting in 1996. The results are depicted in the figure below; blue dots reflect mean horn length and lines indicate one standard deviation: Which of the following statements best describes the pattern by which male horn length has changed?
Read DetailsA scientist discovers three populations of grasshoppers. The…
A scientist discovers three populations of grasshoppers. The number of each color of grasshopper (green, gray, and brown) has a strong correlation with the color of the soil in each population. To determine if the correlation is due to natural selection, the scientist places a few gray grasshoppers into the population of green grasshoppers, and a few gray grasshoppers into the population of brown grasshoppers. Then the scientist records which color of grasshopper is eaten most often by birds. Which of the four ecological science approaches is the scientist applying?
Read Details