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:
The universe is all the planets and stars that orbit the sun
The current, and 23rd, Prime Minister of Canada is the Liberal Party's Justin Trudeau, who was appointed on November 4, 2015, by Governor General David Johnston, following the general election that took place that year.
Answer:
78 percent - nitrogen
21percent- oxygen
absorbs ultraviolet-ozonosphere
atmospheric weather-stratosphere
starts seven miles -troposphere
layer composed 0f layers- thermosphere
important fr radio wave-ionosphrere
trapping of heat- green house effect
