Which statement best describes the structure indicated by letter x in the diagram below?
a) it is kept open by rings of cartilage.
b) it is lined with a mucous membrane that filters, moistens, and warms the air.

What human activity increases beach erosion?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.