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Which of these changes do not involve forming or breaking chemical bonds? A. burning and melting B. rusting and cutting C. burning and digesting D. boiling and melting
Weegy: The answer is D. boiling and melting. (More)
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Expert Answered
Updated 10/17/2012 11:46:55 AM
2 Answers/Comments
I have been informing you to answer in complete sentence, restate the question as part of your answer, yet you're still doing the same thing. Please don't make any moderators give you another warning.
Added 10/17/2012 8:26:27 AM
I will do andrewpallarca.
Added 10/17/2012 11:46:55 AM
Who used khipu, a system of recording numbers by tying knots on strings? A. Aztec B. Maya C. Inca
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Expert Answered
Updated 6/11/2014 8:58:35 AM
1 Answer/Comment
INCA used khipu, a system of recording numbers by tying knots on strings.
Added 6/11/2014 8:58:35 AM
This answer has been confirmed as correct, not copied, and helpful.
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