You are presented with the quiz "what changes to the particles of an object when hit?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hitting an object causes the particles in that object to vibrate" and "frequency is the measurable rate of that vibration".   So, what's the best answer to the question?
frequency
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You are presented with the quiz "A ship is an example of what?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aship is used for moving people across bodies of water" and "transportation is the moving of people or things from place to place".   So, what's the best answer to the question?
Water transportation
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You are presented with the quiz "what do wind and rain cause?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "wind and rain cause erosion" and "abrasion is particle by particle erosion".   So, what's the best answer to the question?
abrasion
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You are presented with the quiz "Chitin can be used for protection by whom?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "scales are used for protection by scaled animals" and "fish scales are also composed of chitin".   So, what's the best answer to the question?

Fish
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