It was first explored by Auguste Piccard in the year nineteen thirty one.
It was first explored in 1985.
It was first explored by Francisco Coronado!
Stratosphere is the layer above troposphere. Troposphere is the first layer and is below the stratosphere.
Portugal explored the New World first
Eric Blandford.
What country first explored Ohio, and claimed it as a territory
Troposphere
in 1973
The Illiniwek
1876
The Europeans
In the late 1700s