One important ecological issue is fire. Many grasslands are being used as suburbian housing areas and for growing populations and fire cannot be allowed to spread through these areas with a population of people. Grasslands are adapted for fire and cannot survive with out frequent fires. As fire is suppressed in these areas, fuel builds up (instead of being consumed in a low energy maintenance fire) and this leads to wildfires like we are seeing in California and Australia. We must find a way to maintain our grasslands through prescribed controlled fires.