Q. Which among the following statements is/are correct about the troposphere?

1. The temperature in this layer decreases with the increase in height
2. The greater fall in the temperature is above the equator

Select the correct code from the options given below:
Answer: Both 1 & 2
Notes: Troposphere is the lowermost layer of the earth's atmosphere. The height of troposphere is about 18 km on the equator and 8 km on the poles. The temperature in this layer falls at the rate of 5 degrees per kilometre. It reaches -45 degree celsius at the poles and -80 degree celsius at the equator.  The greater fall in temperature above equator is because of the greater thickness of troposphere is 18 km.