and deserts result from the global wind patterns that create dry high pressure air masses around 30 degrees north and 30 degrees south and at the poles

Sahara and the great sandy.

Explanation:

The result of the global circulation of the winds on the earth that create dry and high-pressure areas to the 30 degrees of both north and the south part of the country. A result of the flow of the westerlies and these are mod latitudes the interaction of the Hadley cells that usually form the ITCZ zone and is produced thermodynamically.

343^x = 49^4-xx = 4-xx+x=42x = 4x = 4/2x = 2therefore x = 2

Ba rock that formed 1,400 million years ago!