There are several hypotheses, including warming or cooling of Earth, changes in seasonal fluctuations or ocean currents, and changing positions of the continents.
有几种假说,包括地球变暖或变冷,季节波动或洋流的变化,以及大陆位置的变化。
2
The apps show sea surface height, sea surface wind, areas of overfishing, oceanic currents, and other non-Google Earth projects that graphically illustrate Marine pollution.