Answer:
Correct answer is C. It would cause Hitler to divert troops from the Russian front, thus weakening their advances there.
Explanation:
Option C is the only correct answer as the Operation Barbarossa was under way and it was presenting a real threat for the Soviets, who fought under heavy casualties. The opening of new front made situation easier for them.
Option A is not correct as that could not happen without new fronts in Europe.
B is not correct as most of the army was attacking Soviet Union.
D is not correct as this could not happen without Operation Overlord.
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.
Richard Nixon i think sorry if its wrong