| I. It occurs at irregular intervals |
| II. It carriers warmer water |
| III. It carries less saline water |
| IV. Its atmospheric equivalent is southern oscillation. |
A) I and II only
B) II and III only
C) III and IV only
D) I, II, III and IV
Correct Answer: D
Solution :
EL Nino, an unusual warning of surface. Ocean waters in the eastern tropical Pacific is the part of southern oscillation. Scientists do not know exactly how EI Nino forms. It is said that El Nino may have contributed to the 1993 Mississippi and 1995 California floods. The average period length of El Nino is 5 years.
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