The answer to this question is the growth of the corpus
callosum. The Corpus callosum is the thick nerve that separates the two
hemisphere of the brain which is the left and right hemisphere of the brain. Corpus
Callosum is the part which allows the transmission of messages of the brain.
The proportion of mottled fish will
increase over time because of the construction company that dumps a load of
gravel in the bottom of the lake which give it a mottled appearance that made
the mottled fish invisible by their major predator which is the wading bird that hunts them
by sight.
