The independent variable in an experiment is
OA) the same in every experiment
OB) the variable scientists observe for changes
O C) the variable that is changed by the scientist
OD) the thing that is kept constant during the experim

the answer is g1

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.

so whats the answer