Witch of the following events gave the frist humans the ability to migrate from asia to america?
a) the invention of the wheel
b) the invention of the boat
c) the rise of ocean levels due to climate change
d) the uncovering of a land bridge that connected the two continents

b.provides a written record of the transaction

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.

the answer is c, all the other options are things they are known for.

hope this ☺️

the democratic and republican parties

explanation: