Ask geography experts to answer what landforms are below and what disasters will occur?

The first picture is a steep cliff landform, and faults are formed, which is easy to induce mountain collapse; The second picture is granite landform, which is spherical landform after granite weathering, which is easy to cause rolling stone disaster; The third picture is karst landform, which is prone to ground collapse and ground fissures. Generally speaking, droughts and floods often occur in this landform type. The fourth picture is the valley plain, which is prone to drought and flood disasters; The fifth picture shows the river erosion landform, which is easy to induce landslides, mudslides and flash floods; The sixth picture shows that the river erodes the landform from the source, which is prone to debris flow disasters.