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.
Stream Pollution. Nearly everything that can be found on land eventually makes its way to a stream. This is because every bit of ground on Earth is a part of some river's watershed. Water flows downhill. Whether the water comes from rain, a hose, or a pipe, whatever doesn't sink into the ground will flow into the nearest stream.