Which of the Following Statements Describes an Example of Population

Multiple Choice

Which of the following statements describes an example of population growth?

A) The average weight of Americans has increased substantially in the past decade.
B) Tropical fish have been found in waters more northerly than their usual habitat.
C) The number of people in a town has increased by 25% in the past 5 years.
D) The number of butterflies in a region has stayed the same from 1950 to 2010.
E) All of the answers are correct.