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.
It was the first republican win after the great depression which saw the republican party diminish in popularity.
The main contentious issues in the election were communism and conservativism.
The republicans who were anti-communist, and conservative won by a landslide.
D is the correct answer.
The major job of political parties is to put forth platforms with sets of ideas and to find candidates that work to follow those platforms.
