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.
Answer:
B. Canada and Mexico
Explanation:
https://www.census.gov/foreign-trade/statistics/highlights/top/top1012cm.html
Answer:
Rome’s geography protected the city from invaders.
Rome’s central location made it a center for trade throughout the Mediterranean.
Rome’s lack of natural resources encouraged expansion.
Rome’s distance from Greece protected its culture from Greek influence.
Answer:
It divided Antarctica between the different countries that were trying to reclaim the country. It also permitted the scientific exploration of all the land
Answer:
12⁰
Explanation:
Angle = 78⁰
Complement = 90 - 78 = 12⁰
