1. I'm busy right now, tell him that i will call him tomorrow
1.A need is something you have to have to survive or complete a task. A want is simply the desire for something, in many cases something to satisfy a need. You need food to survive.
2.In the field of behavioral economics, the term utility refers to the perceived value (i.e., usefulness) an individual receives when they purchase a good or service. There are four different types of utility: form, place, time, and possession utility.
3.We must help to anybody who fell in bad trouble to do our society better/
4.We speak with different people from different countries.Many nations want submarines. Economists say that utility determines 'the relationship between a consumer and a commodity'.
Utility varies between different people and between different nations. A vegetarian does not want meat, but may rate the utility of bananas very highly, while a meat-eater may prefer steak. A mountain-republic like Switzerland has little interest in submarines, while maritime nations rate them highly.
5.The production of pianos falls sharply in wartime.
The utility of a commodity is also related to the quantity which is available to the consumer. If paper is freely available, people will not be so interested in buying too much of it. If there is an excess of paper, the relative demand for paper will go down.
6 и 7 незнаю((.
A thunderstorm is an atmospheric phenomenon in which electrical discharges - lightning, accompanied by thunder - arise inside the clouds or between the clouds and the earth's surface. Typically, a thunderstorm forms in powerful cumulonimbus clouds and is associated with heavy rain, hail and heavy wind.
Thunderstorms are one of the most dangerous weather-related phenomena for humans: according to the number of registered deaths, only flash floods lead to greater human losses [1].
Thunderstorm situation - a synoptic situation characterized by the presence of powerful cumulus and cumulonimbus clouds, but without a thunderstorm. Moreover, the probability of a thunderstorm is 30-40% [2].
Объяснение:
Вроде всё правильно.