Testosterone causes the growth of certain brain areas which control singing in certain birds. Birds sing due to instinct. Birds sing because they hear their song early in life and form a template which controls later singing. Birds sing to defend territories and attract mates. Testosterone causes the growth of certain brain areas which control singing in certain birds.
Birds sing due to instinct.
Birds sing because they hear their song early in life and form a template which controls later singing. Birds sing to defend territories and attract mates. Your instructor asks you to support your belief in monism. Scientists have shown that brain activity is directly related to what the mind thinks. Scientists have shown that the mind and brain do not exist independently.