Question

What evidence is provided by the diagram to support continental movement?


Scientists have discovered four main prehistoric organisms by finding their fossils.


Freshwater organism fossils are found on continents that are surrounded by oceans.


Scientists have discovered fossils from prehistoric plants as well as animals.


Similar fossils are found on continents that are separated by large distances of ocean.

Question 20.



The following question has two parts. First, answer Part A. Then, answer Part B.

Part A:

What evidence does the discovery of the Glossopteris provide?


The five continents were once connected.


Plants were once capable of moving.


Ocean waters have evaporated.


All plants can live in any environment.


Part B:

Which answer provides an explanation for the answer choice in Part A?


Africa and America have different climates.


The locations of the oceans have changed.


Glossopteris plants had bulky seeds.


Glossopteris fossils were found on all continents.

Question 21.



What process could be responsible for the movement of large landmasses over time?


flooding of the oceans


erosion of the land


motion of the tectonic plates


effects of global warming

Question 22.



Glossopteris plants had large, bulky seeds that would have been difficult to distribute over long distances. Which most likely explains why Glossopteris fossils were found on all five continents?


The plants were once mobile.


The landmasses once contained freshwater.


The landmasses were once joined together.


The plants had few predators.



Line Reader

Text Magnifier

Answer 1

- Evidence from the diagram that supports continental movement:
- Similar fossils are found on continents that are separated by large distances of ocean.

- Question 20
- Part A: The five continents were once connected.
- Part B: Glossopteris plants had bulky seeds. (They couldn’t easily disperse across oceans, so finding them on separated continents implies the landmasses were once joined.)

- Question 21:
- Motion of the tectonic plates.

- Question 22:
- The landmasses were once joined together.