Which of the following allowed civilization to begin in Northern Africa? People found a way to accommodate to life in the desert.
The majority of the Sahara Desert was dry like it is today.
People created tools that allowed them to live in the desert.
The majority of the area that is now the Sahara Desert was a lush prairie and full of wildlife

the first one is d and the second a

where is the map so i can

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.

c. reserves power to the states and people