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Biology, 09.04.2020 03:29 brebun4742

2. Explain why the narrator states that "pesticides were not always thought to

be harmful".

3. How does the chemical solution DDT work?.

4. Explain the relationship between Polio, Typhus, WWII and DDT.

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2. Explain why the narrator states that "pesticides were not always thought to

be harmfu...
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