During the period between 543 mya and 488 mya an important evolutionary event occurred and what do biologist call this event and why.. and what climatic factor has contributed to this event?

During the period between 543 mya and 488 mya, an important evolutionary event known as the Cambrian Explosion occurred. Biologists call this event the Cambrian Explosion because it was a rapid diversification of multicellular life forms, particularly in the oceans, during the Cambrian period.

One of the climatic factors that contributed to the Cambrian Explosion was the increase in oxygen levels in the Earth's atmosphere and oceans. This increase in oxygen allowed for the development of more complex and energy-demanding organisms, leading to the rapid diversification of life forms during this period. Additionally, the relatively stable and warm climate during the Cambrian period provided favorable conditions for the evolution and proliferation of new species.