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.
Fire is important because it cooked food, provided light and provided heat
Trading blocs.
Or Acronyms.
Answer:
Sus animales misteriosos y gigantes que se ocultan bajo el mar
Explanation:
Answer:
less than 50 percent of Japanese
Explanation:
less than 50 percent of Japanese people identify themselves as active members of a religious group, a majority of individuals do partake in traditional practices involving praying to Shinto gods, or kami, and visiting shrines and temples on special occasions.
