Women who traveled overland trail to Oregon revealed through their diaries and testimonies the struggle they went and their integration to the male patriarchal setting of their time. They showed that they were able to learn the work of men at the same time accomplish their responsibilities as wives and mothers. But generally was not accepted and earned stereotype criticism among the males.
Generally it was a breakthrough on female division of labor among the male, a change in the gender roles.
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.
Answer:
By hunting and fishing. Hope this helps :)
Explanation:
Took the test
