1.

What is the theme of World Hydrography Day 2021?

A. Hydrography - Enabling Autonomous Technologies
B. Hydrographic information driving marine knowledge.
C. One Hundred Years of International Cooperation in Hydrography
D. Bathymetry - the foundation of sustainable seas, oceans and waterways
Answer» D. Bathymetry - the foundation of sustainable seas, oceans and waterways


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