Consider the following statements:
1. Troposphere contains the largest percentage of the atmosphere which is around 80% of the atmosphere’s mass.
2. The chemical composition of the troposphere is essentially not uniform.
3. Troposphere becomes suitable for air transport due to low temperatures.
Which of the statements given above is/are correct?
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1 only