Concept:Soil erosion removes topsoil and can weaken plant and building support, but it does not cause bushfires.Explanation:Soil erosion leads to loss of fertile topsoil and important minerals.It exposes plant roots and weakens support for plants.It can also undermine and weaken the foundations of buildings.Bushfires are a cause of soil erosion, not an effect of it.Answer:A. increase in bushfires