The three positions that nations occupy in the world system
a. core, periphery, and semi-periphery.
b. metropole, satellite, and semi-satellite.
c. state, nation-state, and nation.
d. wealth, power, and prestige.
e. bourgeoisie, middle class, and proletariat.

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?