19. E. ______ ________ are used in mapping surveys and indicate exact positions and elevations. Bench marks
20. Changes in ________________ of benchmarks are evidence that the land is either ___________ or____________ rising sinking elevation
21. F.Displaced marine fossils found in mountains have 2 interpretations: 1. _____________________________ _______________________________ 2. _____________________________ ________________________________ Higher sea levels covered mountains Rocks were uplifted from a previous ocean bottom
22. G. _____________ is the rising of the crust _____________ is the sinking of the crust Uplift Subsidence