Heather is investigating the properties of light and how it travels. She places a glass on the windowsill and waits for the sun to shine on the glass and observes what happens. Next, she places a piece of cardboard in front of the glass. Which statement describes the results of her observations?
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Answer:
sorry I didn't know that answer
Explanation:
because I and less standard
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Answer:
Adam Smith is known as the father of Economics...
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