Answer:
Scientists Classify air masses by Temperature and Humidity is your correct answer.
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Answer:
Natural resources are things that exist without any actions from human-kind. This is something like wood or stone.
However artificial resources are things that are man-made. These are things such as paper.
Answer:
Computers retrieve files just as they were stored, but human memory is constructive.
Explanation:
They wanted to expand their empire, they wanted to increase their power, and they also wanted to increase their wealth.