What happens when supply goes down, economics, effects, business?

Supply of goods and services can go down. The needs and demands of people are unlimited and there are limited resources. So it is common that supply can go down anytime. In this case it not only effects the business but also the people cant be able to fulfil their wants and deires. There will be problems in the economic growth in the country. There will be rising poverty, unemployment if it lasts for too long.