When studying the earth, scientists usually consider it a closed system. how should that affect human decisions about managing resources and waste?

In thermodynamics, a closed system can be described as a system which can exchange energy from outside but matter cannot be transferred from such a system. This means that the resources present on the Earth cannot be transferred or replaced and the waste can also not be removed. By understanding the concept of the closed system, humans should recognize the fact that many resources such as minerals present on the Earth cannot be replaced and hence, resources should be utilized effectively in a conserved manner. Also, as waste cannot be removed hence humans should stop forming such waste products which cannot be removed or recycled.

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explanation:

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times