Question 9 why are index fossils helpful for

Question 9
Why are index fossils helpful for interpreting the correct order for rock strata?
You cannot tell if rocks in Devon and Ohio were laid down at the same time.
Rock types can repeat in strata, but evolution did not repeat the same
species.
Correct!
Correct!
All rock has fossils of dinosaurs
Fossils are radioactive and can be dated using radioactive decay
The fossils of a species are only found in one kind of sedimentary rock
0.34 / 0.34 pts
Question 10
What is causing the basin and range system in the American West?

10/12/2020 Homework #3: AU20 ASTRON 1141 - Life in Universe (21773)
glaciers
the compression of the crust
the spreading of the crust
Correct!
Correct!
paleomagnetism
0.33 / 0.33 pts
Question 11
What is one difference between the landscape of the US in the Triassic Period
and the landscape today?
Correct!
Correct!
8/9
the Atlantic ocean covered New York then and does not today
Ohio was underwater in the Triassic and above water today
California was attached to Missouri
Pennsylvania did not have land plants then but does now.
0.33 / 0.33 pts
Question 12
What created the terrace labeled "Bonneville shoreline" on this picture of
mountains in Utah?

10/12/2020 Homework #3: AU20 ASTRON 1141 - Life in Universe (21773)
an oblast
an ancient lake formed in a basin
Correct!
Correct!
9/9
Quiz Score:
4
out of 4