Question

What layer is 4th from the surface?
a exosphere
b thermosphere
c mesosphere
d stratosphere
e troposphere

Answer 1

The fourth layer from the surface of the Earth is the **mesosphere (c)**. Here’s a brief breakdown of the layers for clarity:

1. Troposphere (1st layer)
2. Stratosphere (2nd layer)
3. Mesosphere (3rd layer)
4. Thermosphere (4th layer)
5. Exosphere (5th layer)

So the correct answer is **c mesosphere**.