competing hypothesis
121Theory — The word theory has many distinct meanings in different fields of knowledge, depending on their methodologies and the context of discussion.In science a theory is a testable model of the manner of interaction of a set of natural phenomena,… …
122Transmissible spongiform encephalopathy — Transmissible spongiform encephalopathies (TSEs, also known as prion diseases) are a group of progressive conditions that affect the brain and nervous system of animals. According to the most widespread hypothesis they are transmitted by prions,… …
123Paleolithic Continuity Theory — The Paleolithic Continuity Theory (or PCT,Italian La teoria della continuità ) is a hypothesis suggesting that the hypothetical Proto Indo European language can be traced back to the Paleolithic era,tens of millennia earlier than the Chalcolithic …
124India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
125physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
126Antidepressant — Fluoxetine (Prozac), an SSRI The chemical structure of …
127Monotreme — Monotremes[1] Temporal range: 123–0 Ma …
128Mind — For other uses, see Mind (disambiguation). The concept of mind (  /ˈmaɪ …
