The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
The answer is occluded front
Monarchs, such as royal families.
Answer:
The entire global economy is being transformed by digital transformation. For many businesses, digital transformation means investing in digital technologies that improve operations, create efficiencies, and increase customer value.
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Answer:
Saturn is the distinct and large gaseous planet in the solar system that is comprised of a ring on its exterior. It is a planet which has the lowest density. Saturn has an atmosphere of very high thickness and the dominant gas present here is hydrogen and helium. The pressure and the depth in Saturn are directly proportional to one another.
As one goes deep inside the Saturn, the body will eventually shrink and get squashed due to the extreme pressure and also will get freeze due to the extremely low temperature.
