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.
The German dictator was Adolf Hitler.
Answer:
In the first unqualified defeat of a British naval squadron in history, U.S. Captain Oliver Hazard Perry leads a fleet of nine American ships to victory over a squadron of six British warships at the Battle of Lake Erie during the War of 1812.
The Russians created a new communist government that aligned with the Central Powers instead.
<u>Answer:</u>
B) Union troops wanted to strike fear into Confederates by devastating their towns.
C) Union troops sought to destroy resources that Confederate troops needed to fight.
These statements reveal about Union tactics during the Civil War.
<u>Explanation:</u>
Union state tactics to win the civil war was simple, which was aimed to break the resource supply so that the confederate army would become vulnerable and shatter the towns on their way to create fear among the people.
<u>The northern army had 5 major goals-
</u>
1. To block their help from abroad by taking control over the southern coasts.
2. Taking control over the Mississippi river so that it would separate Texas, Louisiana, Arkansas from other Confederate states.
3. To capture Richmond.
4. To shatter the morale of civilians
5. To use the troop size and break the spirit of the confederate army.
