The Environmental Impact of DDT

What is DDT?

• A step in the writing process

• A chemical that helps insects

• A colorless/odorless chemical pesticide

• A parasite that causes malaria

What is the full scientific name for DDT?

• dichloro-trichloro-diphenyl-ethane

• dichloro-diphenyl-trichloro-ethane

• diphenyl-dichloro-trichloroethane

• ALL of the above

Who invented DDT?

• Adam Allie

• Rachel Carson

• Paul Müller

• Adam Allie

"After four years of work and 349 failures, in September of ____, he placed a compound in his fly cage. After a short while the flies dropped and died. What he had found was DDT."

What year what DDT discovered?

• 1962

• 1948

• 1939

• 1972

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DDT helps prevent the spread of malaria by repelling the mosquitoes that transmit it.

What does transmit mean?

• To transfer

• To consume, eat

• To kill

• To help

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What is one benefit of DDT?

• Using DDT decreases the amount of malaria cases, saving human lives

• Using DDT decreases the amount of cancer cases

• Using DDT saves the lives of eagles, falcons, and other birds of prey

• Using DDT increases the number of mosquitoes

This ecologist wrote the controversial book "Silent Spring" warning Americans about the evil spell, that could plague the nation due to the use of the chemical DDT.

• Robert Carson

• Rene' Carson

• Rebecca Carson

• Rachel Carson

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Carson published her fourth book on nature, "Silent Spring" in ______. This controversial text led to the U.S. ban on DDT in ______.

• 1939; 1962

• 1962; 1972

• 1993; 2007

• 1972; 1962

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Describe public reactions to Carson's "Silent Spring".

• Some malaria-ridden countries continued to use DDT to control the disease.

• More people became concerned with ecology and environmental awareness.

• The U.S. government responded by banning DDT in 1972.

• Chemical manufacturers were furious and ran ads telling Americans to ignore the book.

• ALL of these answers

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Using DDT caused...

• ...malaria cases to decrease, saving human lives.

• ...malaria cases to increase.

• ...mosquitoes to overpopulate.

• ...eagles, falcons, and other prey birds to thrive and have successful reproduction.