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.
William Bradford basically describes the natives as unfriendly and hostile. He describes them as unfriendly and hostile because when the colonists arrived at the shores, instead of being welcomed with friendly smiles, they were welcomed with deadly arrows.
Latin can be represented as a Old way in. English history
Answer: Improvements in agriculture.
Explanation:
