Question

how many high tides happen at a given coast in any 24 hour period?

Explanation:

Tidal patterns are mainly due to the gravitational pull of the moon and sun on the Earth's oceans. Most coastal areas experience two high - tides within a 24 - hour period. This is called a semi - diurnal tide. Some areas may have one high tide (diurnal tide) or mixed tides with two unequal high tides in a day, but the most common is two high tides.

Answer:

Two