Answer :
Final answer:
The discovery of oxygen, and understanding its production via photosynthesis, has been pivotal in understanding life on Earth. It led to the Great Oxygenation Event, supporting complex life and protecting it from harmful radiation. This discovery is integral to the studies of biology and evolution.
Explanation:
The discovery of oxygen and the process of photosynthesis has major significance in understanding the world and science as we know it today. Photosynthesis involves a complex sequence of chemical reactions that enable living organisms to utilise sunlight to produce energy-storing compounds like carbohydrates, releasing oxygen as a by-product.
Oxygen production became a major shift in our planet's history nearly 2.4 billion years ago, in what is known as the Great Oxygenation Event or the Oxygen Revolution. This increased the level of atmospheric oxygen, supporting the emergence of complex, multicellular life and forming the ozone layer that protects life from harmful ultraviolet radiation.
Besides supporting respiration, oxygen also plays a significant role in metabolic processes and survival of organisms in a variety of environmental conditions. The discovery of this process helped scientists further understand biologically significant processes, the history of life on earth, and how changes in atmosphere chemistry could have influenced evolution.
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