Answer:
The "streak test" is a method used to determine the color of a mineral in powdered form. The color of a mineral's powder is often a very important property for identifying the mineral. The streak test is done by scraping a specimen of the mineral across a piece of unglazed porcelain known as a "streak plate."
Explanation:
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The answer should be ''The law of the conservation of energy''.
Ones like Egypt use resources different because they can be close to the Nile river which provides rich soil for crops and water but people in countries like China use a lot of Bamboo for things since that is commonly grown there
