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- a cultural deposit is said to be disturbed when the original sequence of deposition has been altered or upset by post-depositional factors. Agents of disturbance include natural forces such as stream or wind erosion, plant or animal activity, land-slides etc.; and cultural forces such as later excavations.
- Any event or series of events that disrupt ecosystem, community, or population structure and alters the physical environment.
Source: Terms of the Environment
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