There is a spring attached to the screen door on elijah's front porch. elijah opens the door stretching the spring< (1) after walking through the doorway< (2) elijah lets go of the door and the spring contracts pulling the door shut.< (3) describe an energy transformation that took place in each of the number events above.(1)(2)(3)

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

the answer is a)

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