Peringkat Inteligensi Mahluk Hidup disusun dari yang terendah hingga yang paling tinggi

Peringkat Inteligensi Mahluk Hidup disusun dari yang terendah hingga yang paling tinggi.

"Another is the prefrontal area of the brain, a region that is substantially more developed in humans than unhumans an in other primates, and is involved in operations that we associate with intelligence."

" Some are more highly organized than others, and possess a higher order of the instincts, but even this does not reach so high as the reason. And it may be admitted that there are different degrees of development among the same class of animals, that one is shrewd and cunning, another stupid and easily trapped ; one leads and another follows, and it may be inferred that there are organic reasons for this."