Answer:
C. This is a case where hybrid offspring of the two species are less fit than either of the parent species. In the geographic areas where the populations overlap, natural selection has reinforced color differences that serve as reproductive barriers between the two species.
Explanation:
Nature has developed certain reproductive barriers or mechanisms of reproductive isolation. These occur to prevent members of different species from mating and producing offspring or to make sure that the offspring are sterile.
Answer:two-party system, political system in which the electorate gives its votes largely to only two major parties and in which one or the other party can win a majority in the legislature. The United States is the classic example of a nation with a two-party system. The contrasts between two-party and multiparty systems are often exaggerated. Within each major party in the United States, the Republicans and the Democrats, many factions are struggling for power. The presence of divergent interests under a single party canopy masks a process of struggle and compromise that under a multiparty system is out in the open.
Explanation: I dont have an explanation.
Answer:
Numbers or variables in a problem that DOES NOT have an equals sign in it. It can be evaluated or simplified but cannot be solved.
Example: 5x+17 is an expression
