Two major geologic developments are the closing of the Tethys Ocean and the movement of the continents to their current positions, while two biological developments are the diversification of the mammals and the evolution of the humans.
Explanation:
The Cenozoic is the latest geological era, and it is one that is very interesting from many aspects. This era started from 65 million years ago and is still going on, having to basic division; Paleogene and Neogene. Many changes occurred in the Cenozoic, including climatic, geologic, and biologic.
One of the major geologic developments has been the movement of the continents to their current positions. That in turn resulted in another major geologic development, that being the closing and gradual disappearing of the Tethys Ocean. From biological point of view, a major development has been the diversification of the mammals and becoming the dominant group of animals on the planet. Another major development has been the evolution of the hominids, which gave rise to the modern day human, the most intelligent organism to have ever lived on the planet.
Other major development worth of mentioning are:
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