If the most industrialized countries all signed a climate-change treaty with the goal of keeping the sea at its current level, which would be a free rider benefiting from a positive externality of the treaty

The answer is "a small, poor island country in the Pacific".

A positive externality is an advantage that is delighted in by an outsider because of a monetary exchange. Third parties incorporate any individual, association, property proprietor, or asset that is in a roundabout way influenced. A free rider is somebody who needs others to pay for a public good however plans to utilize the good themselves.

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 : -

carefully examine the map above. based on your knowledge of colonialism in africa, the area attributed to belgium on this map is most likely the democratic republic of the congo.