The greatest problem facing the use of nuclear power plants is:

1) Accidents in the nuclear plants

2) Disposal of waste materials released from this power plants.

Explanation:

The use of nuclear power plant is quite efficient, but it contains radioactive elements that are highly radioactive and there occurs continuous emission of radiations that are harmful for health. There is no release of any green house gas and fossil fuels are not burnt.

The problems associated with the use of nuclear power plant are as follow-

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.

mass and volume are the answers you are looking for