"the system serves as the emotional center of the brain."

What is thought to have caused the mass extinction at the end of the cretaceous period?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

Qué sucede cuando una persona tiene muy poco o demasiado costeroides?