Kiesha wants to know what type of food wolves prefer to eat. To answer her question, she attaches a small video camera around a wolf's neck, allows the wolf to go about its normal activities for one week, and then makes notes when she later observes the video. Kirk also wants to know what type of food wolves prefer to eat. However, Kirk chooses to perform a controlled experiment. In Kirk's experiment, he keeps a wolf in captivity, offers the wolf four different selections of food each day, and records which food item the wolf selected. What is one disadvantage of Keisha's investigation?

Which blood cell spend most of their time in the lymphatic system?

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph