Which gas is the most abundant of the trace gases?
a. nitrogen
b. oxygen
c. argon
d. carbon dioxide

This term refers to the number of people per unit area (usually a kilometer or a mile). this could refer to the number of people per square mile in a city, a county, a province, a state, or a nation.

How was mussolini able to gain power in italy? he played to the prejudices of the italians. he fought off hitler’s attempt to annex italy. he led a coup to take over a weakened government. he proposed new ideas to solve the economic crisis.

The most heavily populated areas of africa are found