When ann went to her doctor, he gave her a hearing test. during the test, the doctor presented tones to ann through earphones. the tones started at a low intensity and then became louder. the doctor asked ann to raise her hand whenever she started to hear a sound.
the doctor was testing ann's

a. auditory convergence
b. absolute threshold
c. refractory threshold
d. difference threshold

Sheet stain on pee wee's sheets

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.