Scientists can determine if oxygen existed in Earth’s Archean atmosphere by looking for oxidized iron in rock. In the beginning, there was only a little to no oxygen in the atmosphere. The oxygen that are being produced by cyanobacteria is only enough for the weathering process. There will only enough oxygen that shall remain in the atmosphere when the rocks at the surface are properly and adequately oxidized. However, as time goes by, evidences said that the amount of oxygen in the Archean atmosphere is actually increasing in a slow steady pace.
During the Civil War, the South’s use of enslaved labor gave it a way to keep plantations running (Option "C" is the correct one).
Enslaved African Americans, who lived in the South of the US, responded to the American Civil War (1861–1865) in a variety of ways. Some slaves assisted the Confederate war effort, while others were forced to support the Confederacy by working on farms or plantations, in factories and households. There were many slaves who could escape and earn their freedom. Those slaves who remained on their plantations and farms worked as agricultural laborers while their production helped feed both civilians and soldiers. However, much of the wartime agricultural work in the South was carried out by female slaves, since males slaves were hired for the Confederacy's military and industrial works.
Answer:
to hide the evidence of the executions.
Answer:
I'd say Testimonials.
Explanation:
Testimonials because a testimony is a statement made by someone to other(s) with the intent of swaying an opinion. So, in saying the character is a family man who will work for us and our community, is indeed testimony to his character designed to sway the opinions of prospective voters.
