1. Obama took a brief helicopter tour 15 miles east of Venice to view the kinds of marshlands and estuaries threatened by the spill.
2. Historical records show that Zhouzhuang was built on marshlands at the bottom of the ancient Dianshan Lake.
3. China's locust plagues have historically come from marshlands among the tributaries of the lower reaches of the Yellow and Yangtze river systems.
4. On the muddy marshlands Central Avenue eventually came into being because carts repeatedly transported equipments for constructing railways here.
5. These rivers create unique desert wetlands such as the Aral Sea and the marshlands of Iraq.