Repeat Photography

1. Repeat photography is when you take a picture of a certain spot, then few/many years later you take a picture of the same spot in the same angle.

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3. It is useful in geography and historical analysis because it can show you how much or how the area changed. It can show that this one area had more plant life in 1999 than in 2014, or how human population has changed in that area. It can show that there was a earthquake in that area, because of the rift valley.