What is scarcity and why it is so important in economics?i need the definition and meaning about the scarcity and explain why is it so important.thanks!

What is scarcity and why it is so important in economics?i need the definition and meaning about the scarcity and explain why is it so important.thanks! 请这段英语什么意思?And so the insight here is that, experiencing scarcity, having not enough of something in a way that weighs on your mind leaves less for everything else.原文网址And so the insight here is that, experiencing scarcity 这英语句话看不太明白Rapid business developments have led to a flood of newcomers,causing a scarcity in housing and crowding schools.后面半句是 causing a scarcity in (housing and crowding schools)还是causing a scarcity in housing (and 英语翻译In the physcial economy when you are selling nouns,there is an undeniable relationship between scarcity and value.But in an economy of verbs,the inverse applies,fame is fortune.【机译什么的就别发了】 What is five and five? what is five and two? What is five and tow? What is five and three? what is one and one? what is twelve and fourteen What is one and one? What is nine and thirteen what is relationship she and What is eleven and thiry? and what is your name? what is forever and ever what is capital and reserves? What is Trick and Treat?