The minimum amount of stimulation energy needed to detect a stimulus 50% of the time is referred to as:

How does district of columbia v heller relate to federalism

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.

In 1866, a mob in which tennessee city attacked local african americans and burned down homes and schools?