Answer:
- don't echo sound and don't create a reverb
also, these walls are designed to maintain a uniform pitch and amplitude in every corner of room
The region of the United States most harmed by acid rain is the East Coast, including the Appalachian Mountains and the Northeast
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Answer:
population pyramids
Explanation:
Population pyramids show the structure of a population by comparing relative numbers of people in different age groups.
Population structures differ markedly between Less Economically Developed Countries LEDCs and More Economically Developed Countries MEDCs.
The shape of a population pyramid can tell us a lot about an area's population.
Usually pyramids are drawn with the percentage of male population on the left and percentage of female population on the right.
It gives us information about birth and death rates as well as life expectancy.
Answer:
Subsidence occurs when groundwater is overpumped from an aquifer. In areas with nonporous rock, such as granite, which cannot be compacted, ____Fissures____ develop.
(Fissures)
<span>During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, the intake and exhaust valves will both be closed. This means that the mixture of fuel and air are compressed, due to the seal around the combustion chamber that has been created by the closure of both of these valves. Hopefully that answered your question for you!</span>
