Stratigraphy {Ans: study of rock layers and layering}rRNA {Ans: ribosomal RNA, in ribosome}Fermentation {Ans: Process by which cells release energy in the absence of oxygen}Alfred Wallace {Ans: independently developed a theory of evolution and believed in transmutation of species (one develops into another)}Lenticels {Ans: Pores inside branch that allow gas exchange, diffusion of oxygen and carbon dioxide}Cell cycle {Ans: processes by which a cell reproduces cell growth, duplication of genetic material, cell division}Genetic Drift {Ans: change in the frequency of an allele}Model {Ans: Used to explain something on a smaller scale or in simpler terms.}Range {Ans: Difference between highest and lowest numbers}Catastrophism {Ans: Belief that Earth was shaped by sudden, short-term catastrophic events.}Superposition {Ans: In geology, the law of superposition is that underground layers closer to the surface was deposited more recently.}Vascular plant characteristics {Ans: Have true roots, stems, leaves, and xylem.}Third quarter moon {Ans: Rises at midnight and sets at noon}Dark matter {Ans: Matter that does not give off electromagnetic radiation A type of matter that theoretically exists to explain the motion of galaxies Matter that emits no light at any wavelength}Kelvin (K) {Ans: