The pitch of a sound is its highness or lowness. the higher the frequency of a sound wave is, the higher its pitch. the waves shown below represent sound waves. which of the waves would have the highest-pitched sound?

you didnt put any of the following

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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it would only be the stuff in module eight so you need to study all the lessons in that you also could check the flvs

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