SCIENCEBefore reading1. When you walk barefoot on the sand, you leave behind footprints. If someone saw only those footprints, what might they be able to learn about you?2. What might you be able to learn about a dinosaur from its footprint?During reading1. Give three examples of creatures that a vertebrate paleontologist might study.2. What did the new study confirm about duckbill dinosaurs?3. What other two creatures, besides the hadrosaurs, left footprints at the Denali site?4. What are trace fossils?5. What were the four age groups of dinosaurs that probably lived at the Denali site?6. What is an ichnologist?