The thinnest layer of the sun is the corona
The answer is D, noble gases are stable.
Yes it is divded into 12 main cultures
C.
EXPLANATION
Mainland Greece is a mountainous land almost completely surrounded by the Mediterranean Sea. Greece has more than 1400 islands. The country has mild winters and long, hot and dry summers. The ancient Greeks were a seafaring people.
-http://www.ancientgreece.co.uk/geography/home_set.html
