GMAT Critical Reasoning (CR) | Re: In polluted environments, dolphins gradually accumulated

In polluted environments, dolphins gradually accumulated toxins in their body fat,
and the larger the dolphin the more accumulated toxin it can tolerate. Nearly 80
percent of the toxins a female dolphin has accumulated pass into the fat-rich milk her
nursing calf ingests.Therefore, the unusually high mortality rate among dolphin
calves in the industrially contaminated waters along Florida’s Gulf Coast is probably
the result of their being poisoned by their mother’s milk.


Prethinking
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