Biology, 03.02.2020 05:53 kelchalyssa

Which of the following led to the greatest decline of bedbug populations in the mid twentieth century?

highly improved laundering soaps.
the use of pesticides, namely ddt.
the increased use of running water in homes.
the use of washing machines.

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Which of the following led to the greatest decline of bedbug populations in the mid twentieth centur...