Now this is the section of the paper in which you provide the detail so that other people/scientists can repeat the experiment/project that you have just completed. Enough quantitative detail (how big, long etc.) needs to be included so that your results can be reproduced.
The Latin and common names of the species used and studied must be included, as well as the instruments and equipment used and how many repeats were taken. A description of the species may also be useful/necessary, for example, average size.
If the project was in the field, e.g. Norway then a site description, with significant features, both biological and physical must be mentioned.
The experimental design must be included and the hypotheses tested, describe any statistical tests used to analyze the data gathered and reference if your method has previously been used elsewhere. Also reference any statistical software and data transformations.
Also, avoid using overly ambiguous terms, e.g. tube 1, 2 and 3 as this makes it hard to follow both in and out of context.
If you have performed more than 1 experiment or project then it can be useful to include subheadings in order to make it easier for a reader to follow.