Answer: Flowing rivers have caused boulders and rocks to become smooth. The water rushing against them rounds out the pointed edges.
Answer:
I <em>do</em> agree with Roosevelt.
Explanation:
The battle referred in the question is The Battle of San Juan Hill and took place on Jul1 1, 1898, as part of the American-Spanish War. This battle was a very important factor to determine the course of the war. In this battle, Roosevelt was in charge of the Rough Riders (1st United States Volunterr Cavalry). The Battle of San Juan Hill is also considered their biggest triumph.
The Medal of Honor is an award delivered by the President of the US in name of the Congress and it is given to members of the Army, Navy or Air Force who have expressed acts of valor during their service. This battle was won by the Rough Riders, and according to what historians say, Roosevelt was, perhaps, the most important factor. So, according to the standards, I agree with Roosevelt.
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.
In 1931 Japan invaded the Chinese in search of raw materials for its growing industry. By 1937 a large section of China was controlled by Japan and war crimes against the Chinese had become fairly common. Many believe that this ended up contributing to the isolation of Japan. This incident is said to have not been authorized by the Japanese government but many say the Japanese troops decided themselves.
Art, math, science, maybe psychology
