Uploaded on 2016-05-01 by vrle

![Food around Belgrade][1] b) **Waste-water treatment:** Belgrade sits on two river conflux and river pollution is getting higher every year. Wetlands around the city helps greatly in filtering that human waste from the rivers. ![Danube Wetlands][2] c) **Habitats for species:** Veliko ratno ostrvo (Great war island) in Belgrade is an oasis of green near the city center. It is a shelter for many types if vegetation and fish. Different varieties of birds of international importance nest there and the island acts like an isolated shelter for them. ![Great war island][3] d) **Recreation and mental and physical health:** There are many parks with recreational facilities all around the city and Ada ciganlija is one of the biggest and most important. Walking trails and recreation fields are all around 7-kilometer-long lake where you can go and relax in peace every day of the week. ![Ada ciganlija][4] [1]: https://edxuploads.s3.amazonaws.com/14621239223053952.jpg [2]: https://edxuploads.s3.amazonaws.com/14621239875088371.jpg [3]: https://edxuploads.s3.amazonaws.com/14621240367143758.jpg [4]: https://edxuploads.s3.amazonaws.com/146212416850731.jpg