Afactory which crude oil is heated and separated into fuels and other products

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

Ball is tossed up in the air at its peak, it stops before beginning to fall.the ball at its peak has

Abrief, "first-step" presentation of a work to be completed is called a