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Using the UK as a case study, voluntary migration has benefits and costs to the host nantion. Voulntary migration can help balance demographic changes to sustain a healthy working age population. In doing...

There are 4 cases in German- Nominative, Accusative, Dative and Genitive. First you must know the gender of the noun to work out the case. Nominative is used for a person or thing which does the action of...

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Grouping is essentially factorisation, it's just the idea that ax + bx = (a+b)x, which we already know. But the difficulty is in recognising this relationship when x is more complicated, for example when ...

While balancing equations by 'observation' or 'trial and error' is possible for simple compounds, it helps to have a general method of balancing these equations, so that, regardless of how complicated an ...