Author Question: Who was the first person to suggest that all of the continents had been once joined together as a ... (Read 19 times)

fasfsadfdsfa · **on:** Jul 15, 2018

Who was the first person to suggest that all of the continents had been once joined together as a
supercontinent called Pangaea and when was that idea proposed? What will be an ideal response?

Question 2

How does the introduction of a geographic barrier encourage the evolution of species? What will be an ideal response?

Christopher · **Reply #1 on:** Jul 15, 2018

Answer to Question 1

The German meteorologist Alfred Wegener proposed the existence of Pangaea in 1915.

Answer to Question 2

A population that is not separated will interbreed, so there will be little opportunity for different
species to form. If a barrier separates that population and if conditions are different on either side of
the barrier, natural selection will favor certain traits over others, and over time the two different
populations of organisms may evolve to become different species.