Some advances of the Empire include the mathematical system of algebra, the invention of the toothbrush, the musical instrument guitar, magnifying glasses used in optics, they were the first to brew coffee, first to create the concept of a hospital and surgical practices that lead to treating ailments of the ear and esophagus.
The answer is A) Skin color. Hope this helps!:)
Effective communication is obviously influenced by different fators among which we can surely include acceptance of responsibility. You have to consider that when someone is taking responsibility for his actions this will make the person who he's talking to view him more favourably, as a more responsible person and perhaps even as someone who wants to sensibely solve problems.
You should wear tight compression outfits to decrease the possibility of drag, especially in an olympic race. You could even wear a swim hat to lower drag from your hair.
