The population of Atlantic South America is mostly made up of descendants of indigenous peoples as well as people originally from:
A. Australia and Asia.
B. Europe and Africa.
C. Africa And North America
D Asia And North America.

About 300 billion dollars in taxes is lost in the united states alone due to an underground economy, which involves paying individuals cash rather than having them on the official payroll. a. true b. false

On average, being married has a(n) effect on happiness.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.