Italian for nudes, this is a word used to refer to the male nudes that Michelangelo added to the painted architecture at the corners of the central scenes on the Sistine Chapel ceiling.

Paleolithic refers to the period between approximately 40,000 and 10,000 years ago. "Upper" is the most recent of three sub-divisions of the Paleolithic period (Lower, Middle and Upper). The word itself is made of two parts. "Paleo" which means old and "lithic" which means stone. Paleolithic is [..]

an IQ test. It is important to remember this, because it can seem at times like your parents, peers, or the colleges to which you apply are judging how smart you are based on your score. The SAT measu [..]

a comparison of two things based on their being similar in some way

the variety of life on Earth or some specified geographic area of the planet; the diversity of life occurs at the genetic level, at the species level, at the ecosystem level, and in evolutionary linea [..]

the study of how species are distributed on Earth

a scientist that studies living or formerly living organisms

 CaCO _{3}; a white, insoluble solid that occurs naturally in certain types of rock such as chalk, limestone and marble; is a main component of coral and echinoderm skeletons, shells of mollusks, exos [..]

a program at zoos, aquaria or research facilities designed to facilitate the reproduction of wild species that are endangered or facing some type of pressure or threat; often part of a formal Species [..]

in a biological context, the management of natural resources to help ensure their long-term sustainability