You should write out y=mx+b and then plug in 1/4 to the m and then plug in the x and numbers to solve for b
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.
There was a larger number of early civilizations in the Eastern Hemisphere than in the Western Hemisphere as due to the availability of better resources along with high technology.
<h3>What was the First civilization?</h3>
The early civilization is referred as the first civilization where there is more emphasis on agricultural land and crop production to maintain their settlement for managing their livelihood.
In the Eastern hemisphere, the environment is a little flexible which provides better resources that help in the survival of mankind by providing sufficint food facilities along with advanced technology which helps in hunting and gazing.
The indigenous population respected nature. Mountain ranges, rivers, forests, the sun, moon, stars, and other natural phenomena all had supernatural power.
Learn more about the First civilization, here:
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Geographic location is the best answer
