During the period of frequent earth tectonic activities, the new ocean basins around Africa, South America and Europe began to expand, creating new spaces  A large amount of carbon dioxide in the atmosphere reacted with photosynthetic organisms, and the dead organisms were then buried in seabed sediments, forming shales rich of carbon element  The carbon in the atmosphere is fixed and the level of carbon dioxide in the atmosphere decreases, reducing the greenhouse effect and lowering the global temperature  This is a very important consequence for marine life
Global warming will lead to a crisis of marine life. Scientists found that a similar crisis had occurred in marine life during the global cooling period 260000 years ago.
 So some scientists believe that  there would be the consequence whether the global climate gets cold or warm