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((.
Объяснение:
My favourite animal is a cat. It can be white, black, gray, brown and other colour. I like the gray cats with striped fur.
This animal has got four legs and a tail. It is about one half a metre long and it weighs a few kilograms.
When cats are little kittens, they are very playful and funny. Each cat has its own character, but all of them are very careful and clever.
перевод
Моё любимое животное — кошка. Она может быть белого, чёрного, серого, коричневого и другого цвета. Мне нравятся серые кошки с полосатым мехом.
Это животное имеет четыре ноги и хвост. Оно около полутора метров в длину и весит несколько килограммов.
Когда кошки маленькие котята, они очень игривы и забавны. Каждая кошка имеет свой собственный характер, но все они очень осторожны и умны.
