What layer of the atmosphere is closest to the ground

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Describe the function of the endomembrane system? what organelles are involved?