This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Early in the twentieth century, what was the prevailing view of how land animals migrated across ... (Read 119 times)

809779

  • Hero Member
  • *****
  • Posts: 579
on: Jul 14, 2018
Early in the twentieth century, what was the prevailing view of how land animals migrated across vast expanses of open ocean?
 
  What will be an ideal response?

Question 2

Explain why the discovery of the fossil remains of Mesosaurus in both South America and Africa, but nowhere else, supports the continental drift hypothesis.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 14, 2018
Answer to Question 1

Early views were far-fetched ideas about rafting, land bridges, and island stepping-stones to get from one continent, across an ocean, and onto another continent.

Answer to Question 2

Mesosaurus was a freshwater reptile, and migration between the continents as they are now would have been impossible; however, if they were connected (as in Pangea), then this animal could have easily moved between the two by freshwater river systems.


809779

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Jul 14, 2018
Thank you :)


rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 14, 2018
Happy to help you


« previous next »
 

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Fossils Give Us a View of Past Life Fossils Give Us a View of Past Life
Anteroposterior View of the hand skeleton Anteroposterior View of the hand skeleton
Survey and posture of client: Lateral view Survey and posture of client: Lateral view
Internal structure of the nose—lateral view Internal structure of the nose—lateral view
Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia). Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia).
Offset Method Plot of Land with Measurements Offset Method Plot of Land with Measurements
Video: Molecules, Membrane Permeability and Structure

For a complete list of videos, visit our video library