महासागरीय जल के दिन में दो बार नियम से उठने एवं गिरने की घटना को क्या कहते हैं?

Consider statements A and B about Tsunami waves and choose the correct answer: (A) Volcanic eruptions can never lead to the formation of Tsunami waves. (B) The first indication of an approaching Tsunami is the rapid withdrawal of water from the coastal region, followed by a destructive wave.

Consider the statements (A) and (B) on high tides and choose the correct option: (A) They raise the water level close to shores, which helps the ships to arrive at the harbour. (B) They create problems for fishermen as fishes move away from the shore during high tide.