What is the main factor that causes the bedrock to weather at different rates

answer; /// i believe that the correct answer is (50%);

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )

answer; ///blank(1); green bananas; blank(2); raw potatoes;