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.
25% of the civilians were killed in September 2015
Britain is a VERY VERY BAD PLACE for <u><em>agriculture </em></u>
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It needed colonies with very good agricultural farming land so that it could grow crops/materials and <u>sell them to make profit</u>
Also England wanted power and status so it decided to show off by taking large amounts of land also that could be used for warfare
Answer:
Lol, the answer is English hope this helps can I have brainly?:)
Explanation: