If a small number of tree frogs migrate to a mat of vegetation that is already home to an established population of tree frogs and introduce new alleles into the native population's gene pool, this change is referred to as a the bottleneck effect. b directional selection. c genetic drift. d gene flow.

Current 1 of 8.4 a runs for 240 seconds and then stops. current 2 is 10.5 a. how long does current 2 have to un to deliver the same amount of charge as current 1? 88.28 192 s 2016 s 21,000 s

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.