At times some left leaning and right leaning politicians may end up on the same side of the fence. Some members of the Australian environmental movement, notably the organization, Sustainable Population Australia, believe that as the driest inhabited continent, Australia cannot continue to sustain its current rate of population growth without becoming overpopulated. This view may also be related to rates of Australia Immigration Spouse Visa. SPA also argues that climate change will lead to a deterioration of natural ecosystems through increased temperatures, extreme weather events and less rainfall in the southern part of the continent, thus reducing its capacity to sustain a large population even further