Answer:
Common set of genes
Explanation:
There are 6331 set of genes that have been identified to be present and common in every individual on Earth today. This points to the fact there in one common ancestor through which all human beings have been descent. He/ She existed about 650 mya in Pre-Cambrian Era...
Answer:
Unstructured interview was conducted by Dr. Martin.
Explanation:
In unstructured interview the person asks questions randomly, because they are not properly arranged. In other words, these questions are not in a direction but comes randomly.
For example: Dr. Martin asked question to her about herself and when she answered to him then within her answer he took the point and asked question about that point she answered in previous question.
C. Trace Fossils.
Because these are TRAILS, and not the actual animal, these are trace fossils.