Why do scientists think the Grand Canyon was once covered by an ocean?(1 point)

Question

Responses

Only an ocean would have the strength to erode the rock forming the Grand Canyon.
Only an ocean would have the strength to erode the rock forming the Grand Canyon.

Seawater has been found seeping up through the canyon floor.
Seawater has been found seeping up through the canyon floor.

The sedimentary rock type forming layers of the canyon formed under the sea.
The sedimentary rock type forming layers of the canyon formed under the sea.

The Grand Canyon is located along coastlines that likely flooded.

Answer 1

The correct response is: The sedimentary rock type forming layers of the canyon formed under the sea.

Scientists believe that the Grand Canyon was once covered by an ocean because the sedimentary rock layers that make up the canyon were formed from sediments deposited in marine environments. This evidence suggests that much of the region was submerged under water in the past.