Besides ordinary tides, how many other types of tide are mentioned in the passage ?

C

Bên cạnh thủy triều bình thường, đoạn văn đề cập bao nhiêu loại thủy triều nữa trong bài đọc?

Dẫn chứng: the solar and lunar gravitational forces add up to produce higher spring tides.

This is called a neap tide, which comes twice a month and has lower high water marks and higher low water marks.

These changes in the Earth’s shape, although imperceptible to humans, are known as Earth tides.

Another tidal phenomenon, atmospheric tides, is caused by the Sun’s heating of the Earth’s atmosphere.

=>Chọn C