Question

Which of the following provide evidence that South America, Africa, Antarctica, and Australia were once together as one supercontinent? Select the three correct answers.(2 points)
Responses

Icy glaciers covered South America, Africa, Antarctica, and Australia as one supercontinent over the North Pole.
Icy glaciers covered South America, Africa, Antarctica, and Australia as one supercontinent over the North Pole.

Cratons match across the edges of continents.
Cratons match across the edges of continents.

Mountain chains match up where South America collided with Australia to form Pangaea.
Mountain chains match up where South America collided with Australia to form Pangaea.

Fossils of marsupials were originally the same across South America and Australia.
Fossils of marsupials were originally the same across South America and Australia.

Vast deposits of coal formed in regions with ancient deserts.
Vast deposits of coal formed in regions with ancient deserts.

Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions.
Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions.

Answer 1

Correct choices (three):

- Cratons match across the edges of continents.
- Fossils of marsupials were originally the same across South America and Australia.
- Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions.

Brief reason: matching ancient rock units (cratons), identical fossil assemblages across now-separated continents, and corresponding glacial deposits/striations are classic evidence that those landmasses were once joined as part of Gondwana.