Directional selection can be distinguished from disruptive selection by . A. The elimination of extreme variations of traits b. Selection for two extreme variations of a trait c. The preservation of gene frequencies d. Selection for one extreme variation of a trait.

In the 1800s, most european powers followed policies of in which they imposed political and economic control of peoples around the world. a. imperialism b. expansionism c. mercantilism d. isolationism

What role did natural resources play in african politics?

Dominic and stacy each have a stamp collection. dominic has six fewer stamps than three times the number of stamps stacy has. dominic and stacy decide to give all of their stamps to their younger sister, mary. if stacy had s stamps, which expression represents the number of stamps that mary received? a. (3s − 18)(3s − 6) b. 2s − 18 c. 4s − 6 d. 4s − 18