The earliest period of human history, marked by the use of stone tools and hunting-gathering lifestyles.

A scientist who studies the history of life on Earth through the examination of fossils.

The branch of science concerned with the study of fossils and the history of life on Earth.

A word, phrase, or sequence that reads the same backward as forward.

Relating to or having the characteristics of a palindrome.

The act of examining the body through touch, typically by a medical professional to assess the condition of organs or…

A genus of great apes, including gorillas, chimpanzees, and bonobos.

A gland in the digestive system that produces insulin, digestive enzymes, and other substances critical for digestion and metabolism.

A substance that causes oxidation by accepting electrons from another substance.

A chemical reaction in which a substance loses electrons, often associated with the addition of oxygen.