sci 225 exam 2 correctly answered

sci 225 exam 2 The three orbital parameters of eccentricity, obliquity, and precession are collectively known as cycles named after this scientist. - correct answer Milutin Milenkovic Name the orbital parameter movement is similar to the movement of a spinning top. - correct answer Precession (Wobble) This orbital parameter changes on a time scale of 41,000 years - correct answer Obliquity (tilt) Interglacial periods seem to align with what amount of tilt of Earth's axis: higher tilt or lower tilt? - correct answer Interglacial periods tend to be associated with higher tilt of Earth's axis. Define: Phylogenetic Species Concept - correct answer Smallest group of individuals that share a common ancestor Which mass extinction event caused a larger percentage of genera on earth to go extinct : the Permian Mass Extinction or the Cretaceous Mass Extinction? - correct answer the permian mass extinction Explain Maximum parsimony - correct answer Phylogenetic trees with the fewest evolutionary transitions (speciation events) is most likely to be correct. Given an example of how climate change can trigger a mass extinction event. - correct answer Permian Mass Extinction: Formation of Pangea triggered extensive volcanic activity as well as causing changes in ocean currents. The volcanic activity caused changes in the Earth's climate. The changes in ocean current changed the distribution of heat on Earth. Both factors—volcanic activity and ocean currents—changed the global climate and caused massive extinction on land and sea. True or False: Mutations are detrimental to fitness. - correct answer false