Question

PART A
By looking at the different layers of the Earth, we are able to gather information about the age and environment of that area. We can also compare its age to other layers. What is the term used to describe the age of fossil layers based on its location?
Responses
A evolutionevolution
B photosynthesisphotosynthesis
C radioactive datingradioactive dating
D law of superpositionlaw of superposition
Question 2
PART B
Based on your answer to Part A, which of these best describes layers 1-5 versus layers 7-12?
Responses
A layers 1-5 are older and aquatic and layers 7-12 are younger and terrestriallayers 1-5 are older and aquatic and layers 7-12 are younger and terrestrial
B layers 1-5 are older and terrestrial and layers 7-12 are younger and aquaticlayers 1-5 are older and terrestrial and layers 7-12 are younger and aquatic
C layers 1-5 are younger and aquatic and layers 7-12 are older and terrestriallayers 1-5 are younger and aquatic and layers 7-12 are older and terrestrial
D layers 1-5 are younger and terrestrial and layers 7-12 are older and aquaticlayers 1-5 are younger and terrestrial and layers 7-12 are older and aquatic

Answer 1

PART A: D — law of superposition.

PART B: D — layers 1–5 are younger and terrestrial, and layers 7–12 are older and aquatic.
Explanation: by the law of superposition, deeper layers (7–12) are older; the fossils indicate an earlier aquatic environment and the upper, younger layers show terrestrial life.