Would a species that migrates into and out of an area be considered part of the area's biodiversity? Explain your answer. Need help !!

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.

In figure 1-2 what is the distance from point b to point c?