The atmospheric portion of the biosphere occurs in the
A) heterosphere.
B) troposphere.
C) ozonosphere.
D) lithosphere.

Question

Quizplus · Accepted Answer

The atmospheric portion of the biosphere occurs in the troposphere, which is the lowest layer of the Earth's atmosphere where most weather occurs and where the majority of living organisms exist. The heterosphere is the upper layer of the atmosphere where gases are stratified according to their molecular weight, and the ozonosphere is a portion of the stratosphere where ozone is most highly concentrated. The lithosphere refers to the solid, outermost shell of the Earth.

The Atmospheric Portion of the Biosphere Occurs in the