Remember that PCBs are stored in fat, and fat is used to make milk. Propose a theory that would explain the following facts: (5pts)Female orcas have been shown to live roughly twice if male orcas.The first offspring of a female orca almost never survives.In recent years there has been a dramatic increase in the number of observed birth defects in babyorcas (such as spina bifida), and male orcas suffer greater levels of early mortality associated with cancer and disease.

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