BIOL 1201 Chapter : First 2 Weeks Spring 2013
Document Summary
Science the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process. Key points about the nature of science: science originates in questions about the natural world, science uses observations . Scientists: employ a variety of techniques to investigate the natural world, make their explanations public through presentations and publications, critique the explanations proposed by . Our typical experience: body temperature 37 degrees c, 1 atm of pressure. What"s the most common habitat for life on the planet: the deep ocean. Antarctic fishes: live and have body temps at -2 degrees c (below the freezing temp of most vertebrates body fluids) [ectotherm] Penguins: keep warm at similar temp [endotherm] Diving seals: hold their breath for as long as 90 min, dive down to 1500 m for as long as 90 min. Deep-sea fishes: down to 7000 m, high pressure, cold temp, low food availability.
