AP Environmental Science - 8.3 Endocrine Disruptors

Which of the following is FALSE?

• Atrazine was banned in the U.S., but DDT is still commonly used.  Both are safe. 

• Endocrine disruptors can be synthetic or naturally occurring chemicals. 

• Endocrine disruptors affect the hormonal system of organisms. 

• Some medications contain endocrine disruptors and they can end up in water through urine or improper disposal. 

Which of the following is FALSE?

• Lead is the only metal in coal ash. 

• Mercury becomes more toxic when bacteria in aquatic ecosystems convert it to methylmercury. 

• Arsenic is also a carcinogen. 

• Lead, mervury and arsenic can move from coal ash into aquatic ecosystems.