Answer:
Changes in the pressure create the flow of the air to move up and down in the ear and thus create popping sound.
Explanation:
- The ear-popping is caused by the phenomenon of the opening of the Eustachian tube when one swallows and it might be automatically when you blow our nose or are setting in an airplane and this sound is created when the air enters the middle ear through the tube.
Actually, the answer is A. I just took this test and got it right.
Granite
T: Phaneritic, Pegmatitic
P: Craton. Near Intrusive bodies such as a batholith
Plutonic
Minerals: Major: Plagioclase, K-spar
Granite #2
T: Phaneritic
P: same as above
plutonic
minerals: Major: Kspar Minor: Quartz and plag
Syenite:
T: Phaneritic
P: intrusive body. common in sills and more mafic bodies.
minerals: mainly alkali feldspar and amphibole
Panama, nicaragua that’s the answer for the countries it borders
