What are the statements? we need more information in order to answer your question :/
In any particular culture, an idea or way of doing things that is common to the culture is called a cultural norm.
Incoming solar radiation is almost double at the equator then at the poles, causing the water closer to the equator to be warmer. The heat difference also causes the oceans to swirl so the water that is around the equator will eventually end up at the poles and keep circulating around.