Around the turn of the twentieth century, inventor robert shuman was engineering products that used energy directly from the sun to power motors and farms. he stated that coal and oil would eventually run out and that humans needed to learn how to use the more-abundant energy resource of the sun. during which stage of technological design did shuman identify that using oil and coal would be a problem?

There is four stages of technological design:

1. identify a problem or need.

2. design a solution.

3. implement, build, test the design.

4. determine if the solution met the need.

First stage

Explanation:

Edge 2020

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hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?