s
| 1. They are also called Ross by waves. |
| 2. They are usually found near tropo pause. |
| 3. They travel from west to east in the northern hemisphere and from east to west in the southern hemisphere |
| 4. They travel at very high velocity |
| 5. They are usually sinuous in character |
A) 1, 2, 3 and 4 only
B) 1, 2, 3 and 5 only
C) 1, 2 and 4 only
D) 1, 2, 4 and 5 only
Correct Answer: D
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