<Dd> There are natural and human - made (designed) systems . Natural systems may not have an apparent objective but their behavior can be interpreted as purposeful by an observer . Human - made systems are made to satisfy an identified and stated need with purposes that are achieved by the delivery of wanted outputs . Their parts must be related; they must be "designed to work as a coherent entity"--otherwise they would be two or more distinct systems . </Dd> <Dl> <Dt> Theoretical framework </Dt> <Dd> An open system exchanges matter and energy with its surroundings . Most systems are open systems; like a car, a coffeemaker, or a computer . A closed system exchanges energy, but not matter, with its environment; like Earth or the project Biosphere2 or 3 . An isolated system exchanges neither matter nor energy with its environment . A theoretical example of such system is the Universe . </Dd> </Dl> <Dd> An open system exchanges matter and energy with its surroundings . Most systems are open systems; like a car, a coffeemaker, or a computer . A closed system exchanges energy, but not matter, with its environment; like Earth or the project Biosphere2 or 3 . An isolated system exchanges neither matter nor energy with its environment . A theoretical example of such system is the Universe . </Dd> <Dl> <Dt> Process and transformation process </Dt> <Dd> An open system can also be viewed as a bounded transformation process, that is, a black box that is a process or collection of processes that transforms inputs into outputs . Inputs are consumed; outputs are produced . The concept of input and output here is very broad . For example, an output of a passenger ship is the movement of people from departure to destination . </Dd> </Dl>

State what type of system the earth is and what the inputs and outputs are