What species first appeared to walk upright?

The first species that appeared to walk upright was the Australopithecus.

Explanation:

Australopithecus was an extinct genus of hominins that lived in Africa between 4.2 and 2 million years ago.

The Australopithecus presented both ancestral characters (little bulky brain) and derived characters (teeth close to that of the genus Homo). Their locomotion was generally mixed, and associated a form of bipedalism with an ability to climb still marked. It is possible that one of the Australopithecus species is at the origin of the genus Homo, which appeared in Africa between 3 and 2 million years ago.

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 : -