Hi, would you give me some advice on my essay, thanks a lot!

[gastropoda]

http://www.urch.com/forums/gre-analysis-issue/95493-issue-13-waiting-your-advice-thanks.html

I have post my essay here but i havent receive the resopnse.

maybe people are busy doing their own business

So, could anyone here have a look at my essay and give me some advice.

Thanks a lot!

[Marwan2010]

looks pretty solid and has a good pattern