Burning is a chemical change, and this changed the chemical properties of the wood. Indicators that chemical change has taken place are fizzing, energy being given off or color changes.
Answer:first of all what is your question and i can give and example which is Use them when you have 2 forces named Fa & FF or Fg & Ff acting in opposite directions on an object and you need to know the resultant of your 2 forces.
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i searched it up
Answer: they could get a piece of the coral and run tests on it
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