This topic contains a solution. Click here to go to the answer

Author Question: Early in the twentieth century, what was the prevailing view of how land animals migrated across ... (Read 101 times)

809779

  • Hero Member
  • *****
  • Posts: 579
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
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.





 

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

For a complete list of videos, visit our video library