1.

What is the theme of 2021 World Hydrography Day?
A. Hydrography - enabling autonomous technologies
B. One hundred years of international cooperation in hydrography
C. Mapping our seas, oceans, and waterways - more important than ever
D. Bathymetry - the foundation for sustainable seas, oceans, and waterways
Answer» C. Mapping our seas, oceans, and waterways - more important than ever


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