Pokemon EV's IV's and Stats!?

Question

Well, I'm a huge player of diamond and pearl, BUT I constantly lose to stat disadvantiges. Like, what are IV's and EV's and I was reading one of "Proffesor Oaks" Anwsers I might have misunderstood but can pokemon at lv. 100 face certain pokemon and stats grow? Like if I faced a pidgey would his stats eventually grow for speed? Help Meeeeeee!!!! Plz.

Answer 1

http://www.serebii.net/games/ivs.shtml

http://www.serebii.net/pokedex-rs/ev.sht...

Serebii.net does a -very- good job at explaining IV's and EV's. I know no better explanation.

Answer 2

Check Psypokes.com's Iv's and Ev's guide if you need help!

There is also a nature guide as well!