Question

There are four layers in the atmosphere. Most human activities take place in the ________. Select one of the options below as your answer:
a. stratosphere
b. troposphere
c. mesosphere

Answer 1

Most of human activities are concentrated in the lowest part of the Atmosphere: the Troposphere: the correct answer is: b).

Our planes also fly in Troposphere, but our flying baloons also reach the next layer: in the stratosphere. After this layer the next layer is the Mesosphere - where the Meteors can be found.