The greyhound is a dog breed known for its amazing speed. This breed was produced by taking the fastest animals and breeding them together generation after generation. Though artificial, this is an example of . stabilizing selection disruptive selection overdominance directional selection underdominance

directional selection                                              

Explanation:

Directional selection: In population genetics, the term "directional selection" is also referred as "positive selection" and is described as a method of "natural selection" that encompasses a particular phenotype is being favored or dominated over any other types of phenotypes and leads the "allele frequency" to get molded with respect to time in the given phenotype's direction.

In the question above, the given statement signifies the "directional selection".

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 : -

i dont know sorry why dont you looking it up on google