They are the air ways, the lungs, and the muscles of respiration.
C) Allow the heavily degraded ecosystems to disappear
Hubble's Law is the recessional velocity, which is the speed of a celestial body moving away from the observer, is proportional to its distance.
It states The Universe is expanding, our galaxy is expanding, red shift is proportional to a body's distance from us, and red shift is proportional to distance form the center of the universe.