Natasha was learning about physical features that serve as natural boundaries between continents. One of the boundaries that she read about was a low-rising mountain range that was rich in natural resources. What is the name of this physical boundary?

Identificar audio textbook you will hear a series of words. based on the contextos illustration and your knowledge of the vocabulary, write each word you hear in the appropriate category.

Which number identifies the guyot? a. 1 b. 2 c. 3 d. 4 e. 5 f. 6

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.