Study the image of a fossil shown below. How might a scientist use this fossil to learn more about the history of life on Earth? A. to compare structures in the fossil with homologous structures in other vertebrates
B. to look for vestigial structures in the fossil and compare them with functioning structures in living animals
C. to examine the fossil for evidence of the stages of embryological development of the animal to compare to development of living
D. to determine the mineral content of the fossil and compare it with that of other fossils

You have previously chosen a side to an issue, stated a claim, and you have written ideas about your claim in your argument organizer. now you will use your ideas from the organizer (and tips from this lesson) to write the introduction to your argument. in your introduction, remember to include: basic information on your topic a reason to care about the issue your specific claim that is clearly focused on your issue (exclude all personal feelings and the pronoun “i”) write three or more complete sentences write in formal style using the third person point of view. use correct grammar, punctuation, and spelling.