Catherine is at a crowded baseball game when she loses track of her son, nick. despite the loud cheering and noise of the crowd, she can pinpoint his location when he calls for her because she can distinguish the sound of his voice from the all the other voices. this illustrates theory. absolute threshold just noticeable difference sensory adaptation signal detection

An externality can be created by a. people working at a production job and enjoying their work b. a production activity but not a consumption activity c. a consumption activity but not a production activity d. a production activity or a consumption activity externalities a. are always positive, and an example is flu vaccinations b. are always negative, and an example is the pollution created by trucks c. can be negative or positive. logging has a negative externality, and education has a positive externality d. can be negative or positive. a negative externality is having to go to school when you would rather go to the beach, and a positive externality is spending time with your friends

Which of the following items would serve as a primary source for a historian studiying the american civil war

Astudent answers 86 problems on a test correctly and receives a grade of 98% how many problems were worth the same number of points