Cancer may spread to the head and neck from other parts of the body and cause oral pain. With some cancers, pain may be felt in parts of the body not near the cancer. This is called referred pain.
Soil erosion. If you define land pollution as irreversible damage to the land, you have to include soil erosion as a type of pollution too. Many people think soil is soil, always there, never changing, ever ready to grow whatever crops we choose to bury in it.
The biggest problem that land pollution creates is the impact it has on the surrounding environments. Every form of land pollution kills off the habitats of land animals as well as aquatic life. The more we deplete these habitats the more the ecosystem is thrown out of balance.