Answer:
I will give you the basis so you can create your password
1.-List the characteristics of your specimens. Start by considering the specimens you are going to try to identify and for which you are going to make a dichotomous key. Consider the characteristics that define the things you are going to observe and start listing them.
2.-Look for exclusion principles. A dichotomous key works through a discard process, so you must consider the characteristics you can use to differentiate the things you are going to examine. For example, if some of the specimens you observe have feathers but others have fur, then the word "feathers" is a good distinguishing feature.
3.-Determine the most general characteristics. The objective is to create a dichotomous key based on increasingly specific differentiations, so you must order the characteristics of your specimens from the most general to the most specific. This procedure helps to divide the specimens into smaller and smaller groups.
4.-Formulate a series of distinctive steps. It is up to you if you are going to use questions or statements, although you can find questions that are more intuitive. In any case, each question or statement should only divide the specimens you are going to analyze into two groups.
5.-Divide your specimens into two groups. This will be the first differentiation. The goal is to build on the more general aspect of your specimens, so you should check the list of physical characteristics you developed. You can refer to the first two groups as A and B
6.-Subdivide each of the first two groups into two more groups. Group A and group B will be divided into more specific groups (C and D) based on the following distinguishing feature
7.-Continue subdividing the groups. You must continue to ask more and more specific questions or statements of specificity according to the physical characteristics you identified. You should present characteristics with which you can divide your specimens as necessary into groups E and F, G and H, etc. Over time, you will reach a point where you will have questions that only look for differences between two specimens and your password will be complete.
8.-Draw it as a graphic, if you wish. A dichotomous key can contain only text and simply constitute a series of questions. However, it can help you visualize the material in some way. For example, you can create a "tree diagram" in which each successive level of differentiation constitutes a branch of the tree
9.-Test your dichotomous key. Once you have all the information organized within your password, you should review it using a specimen to verify if it works. For example, suppose you have a dichotomous key that helps you identify several animals. Take a specimen and solve the key questions until it leads you to an identification through the discard process
10.-Identify problems and find solutions, if necessary. You may find that your password is not working properly and needs an adjustment. For example, it is likely that you have not sorted your questions in an increasingly specific way and that you have to re-organize them. In the same way, it is likely that your code does not divide your specimens in the most logical way, so you must rephrase the questions.