EBIO 1220 Lecture Notes - Lecture 21: Chitin, Multicellular Organism, Arthropod
11 Mar 2017
School
Department
Course
Professor
Document Summary
Process skills (e. g. , interpreting graphs, synthesizing and interpreting information) Over the last 20 years, we know of at least 170 or so amphibian species that have gone extinct and looking at this collectively about 900 threatened. Historically there were lots of frogs and now you can walk the entire shore and not see a frog. People began moving non-native trout into the naturally fishless lake and began to feed on frogs. When frogs began to make a comeback they seemed to begin to fall in population again to some even more insidious" Valley yellow-nosed frog is listed under california esa (endangered species) These frogs kept turning up dead and we were baffled why. Think take a minute to think quietly. Tps using the pictures and the limited information you have so far, propose two possible hypotheses for the (cid:1445)severe decline(cid:1446) of valley yellow-nosed frogs. Tps observe the graphs shown (frog population from 1996-2004)
