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2 years ago

5

A woman treated her home with a pesticide that kills spiders. The first application killed 78% of the spiders. Two months later

she applied the pesticide again, but it only killed 45% of the spiders. What would best explain the decrease in the effectiveness of the pesticide?

1 answer:

gizmo_the_mogwai [7]2 years ago

8 0

The spiders have became resistant to the pesticide.

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