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America operates a two party system of Government. This means that potential representatives not from the Democratic or Republican party struggle to get elected. The use of first past the post is ...
When you look at the map of the Russian civil war in 1918, its easy to think that the Reds look thoroughly outnumbered and outgunned, tucked away at the western edge of Russia clustered around the key cit...
Reactions are all about the formation and the breaking of bonds between atoms. The formation of bonds within a system causes energy to be released whilst the breaking of bonds requires energy to be applie...
Times both side by r to get ar+3r=2a+7 Subtract 2a and 3r from both side to bring a to one side, ar-2a=7-3r Factorise the left handside, a(r-2)=7-3r Divide both side by r-2, a=(7-3r)/(r-2)
Usually the action of water such as an estuary entering the ocean at a coastline provides conditions for erosion and constant flow which means sediment is washed away and transported in the sea and can no...
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