ANSWER: d. All of the above
EXPLANATION: A scale can represent multiple informations. It can show a range of informations written on it. The range of information received from the scale depends on the scale of data. It also shows proportional measurement of any object. Like, which object is heavier and which object is lighter can only be identified by a scale. A range of resources can also be identified on a scale
I’m not entirely sure what is being asked here, but the Tigris and Euphrates rivers is the only place in Egypt (besides the nile delta) with non-arid ground. That’s why most people live around there:
Water and air both have oxygen and due to the contamination in the oxygen both water and air suffer