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Mutations in genetic code occur naturally leading to different alleles in genes. (1 mark) This leads to variation within a species. (1 mark) Variation provides some individuals with traits which mean they ar...

Show clearly that (3√3) 2 = 27 First of all, the question looks overfacing due to the surds, I can assure you that surds are not scary, they simply act as a means of clearing up messy numbers such as 1.73205...

Absolute value means how far away you are from zero. It's better to draw a number line to understand and solve the question. Given the inequality l 4x+3 l >15 , the distance of the 4x+3 value from 0 must ...

Remember that often in A-level exams you can get marks from specific key words and phrases, so first of all try to remember everything you know about the topics in the question ( HDLs , LDLs and atheromas )....

Everyone, rightly, finds this to be the hardest question to answer at an interview. Surely every answer they give would have been given by a student previously. So how to give an effective answer? The key is...