Match the term to its correct definition: 1. Test variable (independent variable)
A. This is what is being measured during a scientific investigation.
2. Outcome variable (dependent variable)
B. This serves as a reference for comparison during a scientific investigation.
3. Control group
C. This is what is being purposefully changed during the scientific investigation.

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the

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.

15.3 cos 65 degrees trig