Question

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?

Answer 1

The answers because they all wouldn't fit together

Answer 2

I believe it's C as well.

Answer 3

Thank you for your reply.

Answer 4

Anytime!