Which phrase describes a study in which all sample members are surveyed only once?
a) cross-sectional study
b) interview

Because jaedyn is a sociable, gregarious child, she tends to be noticed by her teachers and peers. how does jaedyn interact with her environment?

During the late 19th century, russia's settlement and development of siberia was made possible by the invention of the

Which principle do modern democracies share with ancient athens? a. all people deserve equal rights. b. there should be no taxation without representation. c. people should vote on all matters that concern them. d. people should have a voice in government.