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.
D. southeast Asia
Vietnamese culture is uniquely its own but has a lot of Chinese influence
B, the enlightenment was all about explaining with reason, and religion didn't play a role in the enlightenment. Lots of scientists questioned the church.
Grocery store: bags, wages, (employees)/ insurance property taxes and inventory
Answer:
to prevent the Confederacy from trading.
It would also make it more difficult for the South to acquire food to feed its civilian population.
Explanation:
