Name two different producers that
you can see in the photograph.
ary​

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

it would lead to upper respiratory infections and pneumonia.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .