GEOG C82 Chapter Notes - Chapter 15-21,30: Sponge, Oceanic Crust, Photic Zone
Document Summary
Lectures 15-21 & 30 (mimi koehl"s guest lecture): biology, ecology, marine animals, productivity, deep sea life. List of life characteristics (also know about viruses and where they fall: growth, metabolism, movement (mobile or internally, reproduction, reacting to stimuli f, at least 1 cell (with membrane, homeostasis i. Some inheritable traits improve chance of survival unfavorable traits good traits accumulate in the population good traits are selected: natural selection - natural environment (physical, biological) does the selection e. i. Favorable traits retained because they contribute to success in an environment. Luca and the origin of life (where in geologic time did life originate) a. Chemical similarities of all life forms: 3500-3800 million years ago life originated, recipe for life (metabolism first vs. rna first, rna molecules that work as enzymes: ribozymes a. i. Some self-replicating prebiotic world: rna world: hydrothermal vents, potential first cradle of life via chemosynthesis, transfer of energy (from sun to organisms, mechanical, light, chemical)
