Random Worldbuilding Questions (Biology, Geography, Society, etc.)

[Ksheep]

Bad internet give problem with uploading images so I can only give you links instead.

http://www.martiniere.com/shop/images/products/large_100_Ravnica_Island.jpg
http://depaulcapstone10.pbworks.com/f/1266393037/Ravnica_Island_9944242.jpg
http://www.wizards.com/magic/images/mtgcom/fcpics/features/284_swampart.jpg
http://magiccards.info/query?q=%2B%2Be%3Arav%2Fen&s=issue&v=scan&p=20

You may want to fix these links. The "URL=____" bit should have the web address, while the part between "URL" and "/URL" should be the text you want to be seen.

Anyway, to add my two cents, I agree with Yora. It is very possible to get certain types of plant life there, you just need fertilizer. Even without it, you can get certain types of plant, such as palms and pine trees (See these all the time in Florida, where the soil is mostly sand or bare limestone). Also, you have a great source of fertilizer already: The human and animal waste from the city. There's a lot of organic matter that can be gathered from that.