Air must pass from the back to the front of the pharynx to enter the trachea and food must pass from the front to the back of the esophagus
Very true. There are several phyla
So by looking at the seismic waves from earthquakes the scientist learned about the crust and the mantle but they also learned about the outer and inner core. To do this you have to look at a different kind of waves, the S (secondary waves) waves that also get released by an earthquake.
I think its the sunflower family
if i am wrong please tell me!
