Using , researchers have created chronically anxious, ulcer-prone rats by giving them unpredictable electric shocks.

Gettysburg address question what do you notice about the length of this address? why do you think lincoln made it so short?

What was the midwest states often called because they were located in the center of the nation

Which of the following statements about the shang dynasty’s system of writing is false? a. no evidence of the writing system has survived. b. the shang often wrote on bamboo parchment. c. the writing system had over 3,000 characters. d. the writing system developed from a system of pictographs.