Weathering and Erosion Unit Test

Question

13 of 1513 of 15 Items

Question
Which of these facts could you determine by reading the geologic time scale? Select the two correct answers.(1 point)
Responses

the life forms that lived in each era
the life forms that lived in each era

the events that ended major divisions of geologic time
the events that ended major divisions of geologic time

the number of eras in Earth's history
the number of eras in Earth's history

how old Earth is

Answer 1

Correct answers:
1. the life forms that lived in each era
2. the events that ended major divisions of geologic time

Answer 2

Weathering and Erosion Unit Test
14 of 1514 of 15 Items

Question
What provides evidence of an increase in animal species at the same time that atmospheric oxygen concentrations increased?(1 point)
Responses

fossil record
fossil record

rust deposits
rust deposits

stromatolites
stromatolites

anaerobic organisms

Answer 3

Answer: fossil record