Expert answer:Rio BIO 145 – When sea urchins were introduced

  

Solved by a verified expert:When sea urchins were introduced to an intertidal zone in Pacific Beach, California, only three of 15 were alive one year later. La Jolla, California has its own intertidal zone that is almost identical to the intertidal zone in Pacific Beach. Ignoring the effects of carrying capacity, how many sea urchins would need to be introduced into the intertidal zone of La Jolla in order to have 12 remaining at the end of one year? Show all work.

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