Which statement BEST explains the relationship among these two
facts?
In 1828, Conrad J. van Houten invented a press that produced fine
cocoa powder
Cocoa powder was easier to mix with water and led to new types of
chocolate treats.
Joseph Fry found a way to use cocoa powder to make solid chocolate bars.
Cocoa powder paved the way for
"chocolate houses" to open all across
Europe
Van Houten's invention allowed Joseph
Fry to create the first chocolate bar.
Solid chocolate bars were easier to make
than chocolate drinks.
Cocoa powder led to milk chocolate
being the next big breakthrough in
chocolate history

is this a question? put a question ?

the answer to this question is the third option. hope this

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.