The first step of the design process is to A.
form a prediction about the design.
B.
study the uses of technologies over the history of the Earth.
C.
identify a problem that needs to be solved.
D.
copy the design of the most successful technology of the day.

C

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.

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