Use the diagram of Earth's atmosphere to select the letter that best answers each question.
B Which letter represents the stratosphere?
E Which letter represents the exosphere?
A Which letter represents the troposphere?
D Which letter represents the thermosphere?
C Which letter represents the mesosphere?
A Where does most of Earth's weather occur?
B Which atmospheric layer includes the ozone layer?
E Which layer consists primarily of hydrogen and helium in low densities?
A Which layer has the greatest atmospheric pressure?
C In which layer do most meteoroids that enter the atmosphere burn up?
