Need explanation for this question (Bio)

danceluvur26
Fri, 09 May 2008 03:25:36 +0000

C is correct because using pesticides only works well initially but not in the long term. When you use a pesticide it kills only like 95% of the rats/bugs because some are going to have immunity to the pesticide. These 5% that survive will then mate w/each other and produce offspring that are pretty much ALL immune to the pesticide. Therefore when you try to use the pesticide again it ends up being ineffective since most of the rats/bugs are immune to the pesticide.

Hope that helps. :)