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This is a past exam question from a real GCSE paper, and is an example of "completing the square." I will show you 4 steps for answering this question. ¬¬¬ The first step is to check whether the...

1. Note the phenotypes of the parents, work out whether they are homozygous or heterozygous.
2. Choose letters to represent the alleles. The upper case letter should represent the dominant allele...

Firstly, you should look at the structure of the essay before starting to write. There should be an introduction, a paragraph for each idea and then a conclusion. The introduction should include an introd...

The present continuous is used to describe what is happening in that moment. To form it we use:

1. Estar in the present tense Yo estoy (I am) Tu estas(you are) El/Ella esta(he/she is) Nosotros e...

Firstly, we must clearly set out the information we have. The particle in question is a proton, which has a mass of 1.67e-27 kg, and a charge of 1.6e-19 C. The path it takes has a circumference of 27000m,...