Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Atmosphere Structure & Composition
Which of the following is the lowermost layer of the earth's atmosphere?
1
Thermosphere
2
Mesosphere
3
Troposphere
4
More than one of the above
5
None of the above