The ABCDE rule can be used to help you remember what a melanoma tumor typically looks like: 1  Asymmetry: The shape of one half of the mole does not match the other. 2  Border: The edges are ragged, notched, or blurred. 3  Color: The color is often uneven. Shades of black, brown, and tan may be present.
Landslides occur regularly in a variety of landscapes across every Australian State and Territory. These landscapes are commonly characterised by cliffs, steep slopes of colluvium deposits or gentle slopes of unstable geology and slopes which have been subjected to periods of prolonged or intense rainfall.
Natural causes of landslides include: 1  groundwater (pore water) pressure acting to destabilize the slope. 2  loss or absence of vertical vegetative structure, soil nutrients, and soil structure (e.g. after a wildfire â a fire in forests lasting for 3â4 days) 3  erosion of the toe of a slope by rivers or ocean waves.