A historian is interested in conducting a deep analysis on the American stock market crash of 1929 in an effort to understand
how economies shrink and grow over time. Which type of history is
he practicing?

The energy needs of a human population are not affected by

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous