The jet streams A) are high-speed winds in the upper ...

[Mr.Thesaxman]

The jet streams
 
  A) are high-speed winds in the upper troposphere.
  B) play an essential role in the transfer of heat energy from the Equator to the Poles.
  C) are generated by strong temperature and pressure gradients.
  D) are high speed winds generated by temperature and pressure differences.

Question 2

The existence of the world's subtropical deserts (such as the Sahara) is primarily due to
 
  A) warm ocean currents.
  B) strong prevailing northwesterly winds.
  C) extremely high temperatures.
  D) belts of atmospheric high pressure.

[ricroger]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: D

[Mr.Thesaxman]

TYSM

[Perkypinki]

Gracias!