1. the theory that chance is involved in evolution and that variation within a species is accidental. 2. the belief that chance rather than mere determinism operates in the cosmos. Cf. uniformitarianism. 1. Philosophy. a doctrine that the universe is governed only by rigid, unexceptionable law.
Share this set. an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms. Autotroph. an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms.
An autotroph is an organism that produces its own food. It is  usually a unicellular organism. Autotrophs utilize photosynthesis  to produce their food (typically the nutrie â¦ nt glucose). An  autotroph is also referred to as a producer.An example of an  autotroph is algae.A heterotroph is an organism that receives its  food from other sources. It is a multicellular or unicellular  organism.Organisms that are consumers or decomposers are  heterotrophs. A parasite is also a heterotroph. A parasite feeds  off other organisms for its food. An example of a parasite is a  deet tick. heterotroph is an organism that receives its  food from other sources. It is a multicellular or unicellular  organism. Organisms that are consumers or decomposers are  heterotrophs. A parasite is also a heterotroph. A parasite feeds  off other organisms for its food. An example of a parasite is a  deet tick.