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Suppose you want to ask someone if they are tired. You need to start with a declarative sentence: "Tu es fatigué", which means "You are tired" There are two methods you can use to ask ...

Firstly it is always good to relate such a concept with an example that is easily remembered and therefore easily applied. Alleles refer to alternate forms of the same gene, which code for a particular tr...

To solve the equation you need to factorise the quadratic. This means you need to find 2 numbers that when multiplied make 5 and when added together make -6. These would be -1 and -5. You can now separate...

Firstly if you multiply the number infront of the x² by the number at the end to give -12. And then take the number infront of x, which is -1. Now we need to find two numbers that add to make -...

The first step is the draw out the molecules in question to understand what is happening in the reaction. You can see that the bromine atom has been substituted for an alcohol group (OH) in the enthane mo...