Tidal islands (2) are a type of continental island where land connecting the island to the mainland has not completely eroded, but is underwater at high tide. ... They are called barrier islands because they act as barriers between the ocean and the mainland.
The correct answer is A positive correlation
Explanation: A positive correlation indicates that the two variables move together, and the relationship is strong the closer the correlation gets to one. A negative correlation indicates that the two variables move in opposite directions, and that the relationship also becomes stronger the closer to minus 1 the correlation becomes.
Ancient civilizations mostly problem Volcanoes explosive. natural disasters. civil war etc