Final answer:
Natural boundaries are formed by geographical features like rivers and mountains, while artificial boundaries are created by humans. Natural boundaries can become less precise over time due to environmental changes.
Step-by-step explanation:
Natural boundaries are geographical features that divide territories, such as rivers, mountains, or coastlines. They are formed by nature and are often present before human interaction. On the other hand, artificial boundaries are created by humans, through agreements, treaties, or surveying. These could be straight lines drawn on a map, like borders between neighboring countries.
Over time, natural boundaries can become less precise due to environmental changes. For example, a river's course may shift over time due to erosion or sediment deposition, causing the boundary to change. Similarly, coastlines can change due to erosion or sea level rise. These changes make it necessary for boundary agreements to be revised and adjusted.
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