Answer:
b to help organize data and record info.
Answer:
Researchers initially built up the geologic time scale by considering rock layers and record fossils around the world. With this data, researchers put in Earth's stone layers in request by relative age. Afterward, radioactive dating decided the supreme age of the divisions in the geologic time scale.
The correct answer is indicator species.
Answer:
C)
Explanation:
The beaks are in direct correlation with the type of or amount of food they are consuming.