How is blood flow related to lung function during exercise?
blood vessels are dilated to increase the amount of oxygen carried in the blood, and the lungs work harder to meet the body's oxygen demands.
blood volume increases during exercise, making the body more efficient, so it is not necessary for the lungs to work as hard.
the lungs determine the speed at which the heart pumps, so blood flows at a level that accommodates oxygen absorption in the muscles.
the lungs expand and contract, which increases the rate of blood flow so the muscles can convert stored energy to energy for muscle movement.

Blood vessels are dilated to increase the amount of oxygen carried in the blood, and the lungs work harder to meet the body's oxygen demands.

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.

so easy. just google the electromagnetic waves and it’ll pop up.