Step-by-step explanation:
1. Eugenics. Undeniably the most pernicious pseudoscience pushed by the Nazis, eugenics applies the "Darwinian concepts of evolution to the problems of human society", blaming certain "genetically diseased" persons for societal shortcomings.
2. Hollow-Earth Hypothesis. Though not prominent in broader Nazi thought, it's reported that many 'intellectuals' in the upper echelons of the Nazi party entertained the concave hollow-Earth hypothesis, the notion that humans are living on the inner shell of a hollow Earth. Thus, everything we see in the sky is actually at the center of our hollow planet.
3. Biodynamics. The forerunner of modern organic farming, biodynamic farming was invented in 1924 by Austrian-born occultist Rudolf Steiner. As Peter Staudenmaier, an Associate Professor of History at Marquette University, described, "The approach is based on a holistic view of the farm or garden as an integrated organism comprising soil, plants, animals, and various cosmic forces, with sowing and harvesting conducted according to astrological principles.
4. Nazi Anthropology. Key to Nazism was the notion that Germans descended from an ancient, superior "Aryan" race, who had been responsible for most major developments in human history such as agriculture, art
5. World Ice Theory. Invented after a wild dream by Austrian engineer Hanns Hörbiger, world ice theory, or Welteislehre, states that ice is the basic substance of all cosmic processes, making up moons, planets, and stars. Though patently nonsense, Horgiber compellingly popularized his idea to the peoples of Austria and Germany in the early 1900s.