Current studies on frogs and wildlife indicate that hormonally active agents (haas) are a. found in insecticides and should be removed b. found in radionuclides in parent rock materials c. abnormalities associated with developmental and reproductive systems d. causing lung cancer e. creating new forms of lizards

The right answer is A.

The term "hormonally active agent" (or endocrine disruptor) refers to any molecule or compound chemical agent, xenobiotic having hormono-mimetic properties and described as a cause of physiological abnormalities, and in particular reproductive abnormalities. Some examples are PCB, TCDD, DDT. Some of them were used as pesticides and are now banned for use. Their traces always exist at the soil level due to their persistence.

These agents are most often associated with breast cancer.

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