I'll give a lot of what are the 5 steps to the scientific method in order?

1. Make an observation.

2. Ask a question.

3. Form a hypothesis, or testable explanation.

4. Make a prediction based on the hypothesis.

5. Test the prediction.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands