Photograph: © SAF — Coastal Care
Excerpts;
The evolution of the first animals may have oxygenated Earth’s oceans, contrary to the traditional view that a rise in oxygen triggered their development.
New research contests the long held belief that oxygenation of the atmosphere and oceans was a pre-requisite for the evolution of complex life forms. The study builds on the recent work of scientists in Denmark who found that sponges, the first animals to evolve, require only small amounts of oxygen…
