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Cyanobacteria, also known as "blue-green algae", are the unicellular organisms which are able to produce oxygen.
Approximately 540 years ago, the atmosphere was very poor on oxygen. Cyanobacteria are thought to be responsible for the oxidization of the atmosphere back then, in an event known as <em>"The Great Oxygenation Event"</em>. As a result, Earth's life forms suffered drastic changes in their composition, as they evolved from being <em>anaerobic</em> to becoming organisms <em>highly dependant</em> on oxygen. The oxygenation of the atmosphere would eventually provide the adequate environment in order for the <em>Cambrian Explosion</em>, or the first diversification of living organisms, to happen.
<span>Parliament kept trying different ways of raising revenue from the colonies to finance the debts they incurred in recent years. They incurred a huge debt financing the Seven Year's War and were trying to get the colonies to help pay for it.</span>
The preamble of the Constitution is the part through which the US constitution establishes that the government derives its power from the people. It also introduces the six motives of the government in serving the people.
The fundamental purposes and guiding principles are briefly stated in the preamble. The preamble of the US Constitution does not serve as the power provider to the fundamental government neither it put some specific limitations on the government's action. Due to the limited or restricted nature and due to this no court has ever use it as a conclusive factor.
The correct answer is option A.
The best summary of the development of capitalism and growing scrutiny of the system during the nineteenth century was that the capitalist system prospered by challenging the economic constraints of monopolies, but some residents accused it of creating income disparity.
When capitalism first emerged, people were unaware of its mechanisms; however, as it gained popularity, it became clear how it had impacted the working classes and the elite itself.
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