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Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..