Consider the following factors:

1. Rotation of the Earth
2. Air pressure and wind
3. The density of ocean water
4. Revolution of the Earth

Which of the above factors influence the ocean currents?

Normally, the temperature decreases with the increase in height from the Earth’s surface, because

1. the atmosphere can be heated upwards only from the Earth’s surface
2. there is more moisture in the upper atmosphere
3. the air is less dense in the upper atmosphere

Select the correct answer using the codes given below:

When you travel to the Himalayas, you will see the following :

1. Deep gorges
2. U-turn river courses
3. Parallel mountain ranges
4. Steep gradients causing land-sliding

Which of the above can be said to be the evidence for the Himalayas being young fold mountains?

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?