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The formula to find the cosine of the angle is: cosA= u.v/|u|x|v|; 1.u.v means that you multiply the x coordinates together, then the y coordinates and the z coordinates,...

Initially it helps to read over the question a couple of times underlining/ highlighting all important information ie. volumes and concentrations. Next it always helps to have a chemical equation to work ...

Skinner believed that children learn language in the same way that they learn their other behaviour and stated that this was through a system of positive and negative reinforcement. When a child imitates ...

By considering which organisms have each of the referred organelles, we can infer their evolutionary order of appearance.Ribosomes are present in every living cells, whereas mitochondria and chloroplasts ...

Despite his desire to see a nation state built by “the people”, Mazzini failed to attract the support necessary for the movement to grow due the inaccessibility of his ideas and thus slowed the progress t...