Geologists observed signs of widespread ancient glaciers from the same time period in areas across South America, Africa, Antarctica, India, and Australia. What theory did this observation support?(1 point)
Responses
Glaciers were once more common than they are today.
Glaciers were once more common than they are today.
Earth was much farther than the sun than it is today.
Earth was much farther than the sun than it is today.
Most of Earth was once covered in a vast ice sheet.
Most of Earth was once covered in a vast ice sheet.
Those continents were once together as one supercontinent.
Those continents were once together as one supercontinent.
The observation of widespread ancient glaciers from the same time period in areas across South America, Africa, Antarctica, India, and Australia supports the theory that those continents were once together as one supercontinent. This is known as the theory of continental drift. Geologists observed geological features and evidence such as glacial striations, moraines, and glacial deposits that are similar across these continents, suggesting that they were once connected and shared a common history. This theory was further supported by the discovery of matching rock formations and fossil evidence across these continents. The concept of continental drift was proposed by Alfred Wegener in the early 20th century and is now widely accepted as a fundamental principle in Earth's geological history.
The theory that this observation supports is that most of Earth was once covered in a vast ice sheet.
