The presence of dunes in the middle victoria crater on mars indicates that:

This indicates the presence of the atmosphere on Mars, which is pretty amazing. Mars has a very thin atmosphere which became like that due to the direct contact with the solar winds.  Particles from the Mars’ atmosphere were detected going in to space by Mars Express and by Mars Global Surveyor.

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

uhh idk for sure but i think it makes it difficult to pump the oil through the oil rigs