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A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. The theory of biological evolution is more than "just a theory".
Russian Language and Culture (discontinued 2010) v. t. e. Advanced Placement ( AP) Biology (also known as AP Bio) is an Advanced Placement biology course and exam offered by the College Board in the United States. For the 2012–2013 school year, the College Board unveiled a new curriculum with a greater focus on "scientific practices".
Scientific racism, sometimes termed biological racism, is the pseudoscientific belief that the human species is divided into biologically distinct taxa called "races", [1] [2] [3] and that empirical evidence exists to support or justify racial discrimination, racial inferiority, or racial superiority.
Apoptosis (from Ancient Greek: ἀπόπτωσις, romanized : apóptōsis, lit. 'falling off') is a form of programmed cell death that occurs in multicellular organisms and in some eukaryotic, single-celled microorganisms such as yeast. [ 1] Biochemical events lead to characteristic cell changes ( morphology) and death. [ 2]
t. e. Vitalism is a belief that starts from the premise that "living organisms are fundamentally different from non-living entities because they contain some non-physical element or are governed by different principles than are inanimate things." [ 1][ a] Where vitalism explicitly invokes a vital principle, that element is often referred to as ...
Eugenics. A 1930s exhibit by the Eugenics Society. Some of the signs read "Healthy and Unhealthy Families", " Heredity as the Basis of Efficiency" and "Marry Wisely" respectively. Eugenics ( / juːˈdʒɛnɪks / yoo-JEN-iks; from Ancient Greek εύ̃ (eû) 'good, well' and -γενής (genḗs) 'born, come into being, growing/grown') [ 1] is a ...
Observation in the natural sciences [ 1] is an act or instance of noticing or perceiving [ 2] and the acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments.
Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. [ 1 ] The term law has diverse usage in many cases (approximate, accurate, broad, or narrow) across all fields of natural science ( physics, chemistry, astronomy, geoscience, biology ).