UW-Madison Zoology 101 EXAM 4 latest solution update 2023

4 things which effect density - B: birth I: Immigration D: death E: emigration 4 types of ecology - - population - organism - community - ecosystem ecosystem ecology - energy flow between organisms community ecology - interactions among species organism ecology - how organsims structure and behavior meet environmental challenges population ecology - factors of how many individuals of a species live in an area reasons why a species may be absent from an area (4) - 1. dispersal limits distribution 2. behavior limits distribution 3. biotic factors limit distribution 4. abiotic factors limit distribution adaptive radiation of animals - concept that if you dont go extinct, you do better than you did before foundation species - provide food for organisms to live on reasons why Natural Selection cant make perfect organisms (6) - - works upon variable availability - may vary in time and space - may be opposed by other evolutionary forces - often trade offs - not all variation is subject to Natural Selection - takes time