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