During my extended essay, the skills that I gained was my ability to carry out advanced research. Conducting an investigation on a research-based question was never my strength since I never really enjoyed reading through different sources. I also learnt to take into account the need to control variables since it affects the results that are obtained. The quality of data collected was another important aspect of the extended essay and it would only be of high quality if I carried out the experiments in a precise manner. While carrying out one trial, I obtained a negative value for the number of moles adsorbed by the orange peels and that was an indication that I should carry out the experiment with more precision. I managed to do so since the trend in my results supported the hypothesis hence it is evident that precision is important in any scientific investigation.