The earth's temperature began to rise with the invention of power­driven machinery in the late eighteenth century

Which of the following is the largest ethnic minority in Texas?

A) African Americans B) Hispanics C) Jews D) Asians E) Native Americans

Early in the research study, the researcher should think through the topic and develop ideas. Which of the following is true?

A) It is impossible to begin research without some assumptions, concepts, and theory. B) It is possible to write a preliminary report before the research begins. C) Once a researcher is set on a topic, it is impossible to change direction because of what he learns from the data. D) Often the data fit with original concepts.