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.
B) There were more animals capable of being domesticated in America than in Europe, Asia, and Africa?
The secret service, which is a federal policing agency that was part of the department of Treasury. At least until 2003, when is became the department of Homeland Security.
Answer:
They can lead to the lifting of sanctions.
Explanation:
Aid doesn't help an economy.
Competing with the United States is more like a result of having a developed economy, rather than a cause of an economy developing. Plus, the United States wouldn't likely export the same things as a developing nation.
International trade agreements don't help an economy to 'grow quickly', plus this is a really general answer.
The lifting of sanctions is really important. It's hard to develop under sanctions. Trade agreements allow for the regulation, reduction and removal of sanctions. For example, if the US made a trade deal with Mexico, it would greatly help Mexico to develop, as they would now be trading more freely with the United States.
