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Adults can develop immunity to a toxin via being exposed to the toxin, whether this is by infection or vaccination. Since this toxin will be recognised as foreign by the body, this will stimulate an immun...

The LNAT essay should have a similar structure to an A-level humanity essay (especially English or History). You will have to consider both sides of the argument before coming down on one side with suffic...

Benzene has a delocalised pi system in which p orbitals of all carbon atoms overlap above and below the carbon ring. Alkenes, however, have localised pi-orbital overlaps between two carbon atoms. The elec...

There are various ways to express the past tense in French, the easiest one, and the one required at a basic level, is the perfect tense (passé composé). First we have to learn how to conjugate the presen...

Sovereignty is the principle of supreme and unquestionable authority, reflected in the claim by the state to be the sole author of laws within its territory. 
Definition of external vs. inter...