Why were the walls of Athens a disadvantage during the Peloponnesian War? They failed at keeping the Spartans out of the city.
They prevented Athens from trading for supplies.
They cut off Athens from its supply of water.
They led to overcrowding, which resulted in disease.

Correct answer is They led to overcrowding, which resulted in disease.

Explanation:

Last option is the correct one, as after Pericles ordered that all citizens of Athens should retreat to the city a great plague erupted. A lot of people died, including Pericles himself. Athenians were forced to surrender and destroy the city-walls.

All other options are thus wrong, because were not the main reason for the surrender.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -

answer; primary source information;