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 100 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?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Anatomy of the Right Knee Joint, Anterior View Anatomy of the Right Knee Joint, Anterior View
Ventral View of the Spinal Cord Ventral View of the Spinal Cord
Change in Drawing Abilities from Early to Middle Childhood Drawings become more realistic as fine m Change in Drawing Abilities from Early to Middle Childhood Drawings become more realistic as fine m
Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o Like most world-changing inventions, the printing press of fifteenth-century Europe took advantage o
Backlit view of Pluto's mountains, plains and foggy hazes Backlit view of Pluto's mountains, plains and foggy hazes
Microscopic view of glucagon and insulin secreting cells in the islet Langerhan Microscopic view of glucagon and insulin secreting cells in the islet Langerhan
Video: Introduction to Cystic Fibrosis

For a complete list of videos, visit our video library