Types of creatures.The nervous system.Critical behaviour.Protozoa, single-cell organismsThere are no nervous system.-The tag hotel-Kai Fones cyst-ReflexInvertebrate animals.-There is no actual brain.-No complicated neural ganglia are located.Some nerve cells together into a body Hae-A congenital-Reflex a continuousLow-class vertebrates-Brain development not yet front compared to the global brain.-Easy to learnMammal-Front brain grow-The global brain shrink down.-To learn the complex.-Why?Human.-Front brain better flourish.-Use of complex reasons.
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