Immigrants arriving from Central America typically come to the U.S. to

Which two languages are spoken by the most people in our world?

According to Terry’s up/down metaphor which of the following persons is exclusively a member of “up” groups?

Mexican American responses to discrimination after World War II included all but

Which heart chamber is the begining of the systemic circulation?  

Which blood vessel connects to the left atrium?  

Species adapted to stable and predictable environments, with small numbers of large offspring, that provide a lot of resources or parental care to offspring are known as _____ species.

_____ species are nonnative, intentionally, or accidentally introduced to an area by humans. For example, kudzu was introduced to the U.S. for soil conservation.

_____ break down organic matter, including animal waste.

The first species in an area undergoing primary or secondary succession.