Using a Dichotomous Key - Sammons Sci

DICHOTOMOUS KEY. Using the key: Look at the first creature in the diagram. Then read question 1. If you think the creature has a large wide head, go to the second question. If you think the creature has a small narrow head then go to question 11. Keep answering the questions by referring back to the picture of creature number 1 until you can ... ................
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