Final answer:
1. The animal that left the red tracks moved on four limbs. 2. It is difficult to determine if any dinosaurs were running based on the track evidence alone. 3. The animal that left the tracks with the highest level of erosion and deformation likely walked across the area first.
Step-by-step explanation:
1. The animal that left the red tracks moved on four limbs because four distinct footprints are visible in the track.
2. It is difficult to determine if any dinosaurs were running based on the track evidence alone. Running tracks would typically show longer stride lengths and wider spacing between tracks, but this cannot be determined without additional information.
3. The first animal that walked across the area can be determined by examining the tracks. The animal that left the tracks with the highest level of erosion and deformation likely walked across the area first.
4. The animals that left the yellow tracks did not travel together. The tracks are of different sizes, indicating that they were made by different animals.
5. The larger yellow tracks were made by a larger animal, while the smaller yellow tracks were made by a smaller animal.
6. Based on the evidence provided, it is not possible to determine the number of different animals present or whether they were here at the same time.
7. The yellow tracks are two different sizes because they were made by different animals. The larger tracks were made by an animal with larger feet or a larger body size, while the smaller tracks were made by an animal with smaller feet or a smaller body size.