Which of the following factors influence ocean currents ? 1. Rotation of the Earth. 2. Air pressure and wind. 3. Ocean water density. 4. Revolution of the Earth. . Select the correct answer, using the code given below :

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Q: 71 (CDS-II/2010)
Which of the following factors influence ocean currents ?
1. Rotation of the Earth.
2. Air pressure and wind.
3. Ocean water density.
4. Revolution of the Earth. .

Select the correct answer, using the code given below :

question_subject: 

Geography

question_exam: 

CDS-II

stats: 

0,93,28,12,93,7,9

keywords: 

{'ocean currents': [1, 1, 3, 5], 'ocean water density': [0, 0, 1, 0], 'factors': [0, 0, 1, 0], 'rotation': [1, 0, 0, 2], 'earth': [0, 1, 1, 1], 'wind': [1, 0, 1, 2], 'air pressure': [0, 0, 0, 1]}

The correct answer is option 2: 1, 2 and 3.

Let`s dissect each option to understand why this is the correct answer:

Option 1: This option states that only the rotation of the Earth influences ocean currents. While it is true that the rotation of the Earth plays a significant role in shaping the direction of ocean currents, it is not the only factor that influences them. Therefore, this option is incorrect.

Option 2: This option states that the rotation of the Earth, air pressure, and wind all influence ocean currents. This is the correct answer.

- The rotation of the Earth causes the Coriolis effect, which helps in the formation and direction of ocean currents.

- Air pressure and wind patterns, such as the trade winds and the westerlies, drive the movement of ocean currents through friction and pressure differentials.

Option 3: This option states that only the rotation and revolution of the Earth influence ocean currents. The revolution of the Earth around the Sun does not directly influence ocean currents, so this option is incorrect.

Option 4: This option states that air pressure, wind, and ocean water density influence ocean currents. Ocean water density is indeed a crucial factor in shaping ocean currents, as denser water tends to

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