This picture demonstrates SDG-15 which is life on land. In this picture is a growing tree and a tree grate that has been placed over the growing tree. The tree grate prevents people from walking on the soil the tree is growing in, preventing the soil from becoming compacted. When a soil becomes compacted it is difficult for water to enter the soil, preventing the tree from obtaining necessary water. Having this tree grate allows the tree to thrive in an urban environment with heavy foot traffic where the soil would otherwise be compacted. One ecological concept visible in this picture is habitat fragmentation. In this picture there is only one tree surrounded by infrastructure. This tree can be considered a habitat to several insect species. However, this tree has been specifically planted in an area of high infrastructure creating a very fragmented habitat.