A. 2,500,000 it can't be lower then 250,000 in the Roman Empire
Reserve requirement is the answer to this
Answer:
radio wave
Explanation:
Radio wave have photons with the lowest engeries. microwave have little more energy than radio wave .
All this cartoon is saying that in agrarian societies such as these, the economy was primary based on bartering, since the exchange of goods and services was done one a "need by need" basis.
Tundra, it is far too hot for any tundraic conditions