The wind converging at the equatorial low are known as
A) doldrums. B) westerlies. C) polar easterlies. D) trade winds.
Question 2
The high temperatures in the thermosphere occur because
A) high intensity solar radiation causes strong chemical reactions with ozone, and this heats the layer to very high temperatures.
B) carbon dioxide has accumulated to very high levels in this layer.
C) infrared radiation from the ground heats this layer more than any other layer.
D) it is in direct contact with high energy solar radiation.
E) methane is such an effective greenhouse gas.
Pits in south polar ice cap, MGS 1999,
Dead polar bears
This 1900 photograph of steel factories at night in Duquesne, near Pittsburgh, was tinted by hand. S
Wind turbines: the fastest-growing energy sector
Measuring Wind