In the early twentieth century, what was the prevailing view among scientists of how land animals were able to travel from one continent to another?
a. Land animals that traveled between continents were also capable of swimming.
b. Land animals that moved from continent to continent did so by hopping on stepping stones across the ocean.
c. All continents had been connected together as a supercontinent.
d. Some type of land connection allowed land animals to reach other continents.
e. Land animals that moved from continent to continent did so by rafting on materials across the ocean.
d. Some type of land connection allowed land animals to reach other continents.
You might also like to view...
Which is an example of an evaporite?
a. manganese nodule b. phosphorite
c. oolite d. calcium carbonate e. tektite
Partly compacted snow that is intermediate between snow and ice is called a(n)
A) snowline. B) glacier. C) firn. D) moraine.
Normal kidney function involves which of the following?
A) filtration in which small molecules are lost but large molecules are retained B) reabsorption of some small molecules from the urine C) both a and b D) neither a nor b
What earth system interaction cause auroras?
A. Hydrosphere-Atmosphere B. Exosphere-Atmosphere C. Atmosphere-Atmosphere D. Geosphere-Atmosphere