What is a physical or mental representation of an object or an event?

How can changes in technology or consumer demand make it difficult for people to get jobs? by changing the number or kind of jobs available by making it possible for some people to work fewer hours by making it difficult for people to buy what they want by creating a demand for things that are not available

'nepal have varied vegetation as climate and landforms'. justify the statement

Which political principle is set forth in this quote from the declaration of independence? "that whenever any form of government becomes destructive of these ends, it is the right of the people to alter or to abolish it, and to institute new government "?