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The teachings of the Roman Catholic church are opposed to artificial contraception. In 1969, in Humanae Vitae, Pope Paul VI reaffirmed the traditional Natural Law stance of the church. He argued that the ...

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It does no work because there its displacement from the center of its circular trajectory remains constant throughout the entirety of its motion. Therefore, by definition, the work done, i.e. distance tra...

There is always a way out. Words aren't the only way to understand meaning; syntax (the order of words) can give you a very good indication, especially in French. So a first thing to do is to break up the...

The biological membrane is a complex, heterogenous structure, built by two lipid layers with proteins and molecules immersed and in it. Its properties were developed due to the fact that its main function...