You still have room to grow the article; I think it'd be better to expand, even take another paragraph and spell things out in concrete images, e . g ., the rocks are like this; plants grow like this; birds, fish and animals work together like this and have adapted to such & such challenges thus; these-and-these nutrients are in short supply and flow through the ecosystem like so, etc . For me, the lead should be like how your sister feels after her first day visiting you in your new home; she's not a tour guide yet, but she has her rough bearings, she knows the main players and places and what their issues are ? talk ) 08 : 55, 22 May 2008 ( UTC)