Which of the following mammals can hear the largest range of sound frequency?
a. beluga whale
b. bat
c. human
d. porpoise

In the mid 1800s western settlers and american indians differed in their views about

Which best describes the idea behind the "invisible hand"? producers decide what to make for consumers, which guides the economy. individuals seeking their own self interest benefit the economy as a whole. government sets policy for producers and consumers, which guides the economy. consumers decide what they need and want to buy, which guides the economy.

What is it called when countries build lots of weapons to store and them in case of a war?