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.
Answer:
Lobster
Explanation:
Lobster was also known as the poor man's meal because the overabundance of these guys made it easy for people with no money to get their protein. In fact, these crustaceans were fed to prisoners, apprentices and slaves.
They can do a lot things with water. Because water is very necessary.
Answer:
jobs were redilly available
Explanation:
<span>The answer is Ottawa, Canada.
Ottawa is the capital city of Canada and has a population of around 1 million people and is the fourth-largest city in Canada. The city has many of the functions and attractions that one would expect in a capital city - the country's parliament and many museums and educational establishments.</span>
