An Ecologist Spent a Year Studying the Population Dynamics of a Species

Multiple Choice

An ecologist spent a year studying the population dynamics of a species of duck on a lake.At the beginning of the year,there were 86 adults.Of these,16 adults left the lake,12 adults arrived on the lake from elsewhere,76 chicks hatched from eggs,24 chicks survived to become adults,and 8 adults died.How many individuals emigrated?

A) 8
B) 12
C) 16
D) 24