What is system input? a. feedback from scientists about the results of a system b. the ordered processes that the system uses to change raw material c. material that has been changed by a system d. raw material that must be put into a system for processing

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel