A family raises a species of fish in a pond. At the end of each summer, the family sells the fully grown fish. One year, the family notices that the fish are smaller than they had been the previous year. Which statement best explains this observation?
There were fewer fish this year than there were last year
There was less food available in the pond this year than last year
The type of fish in the pond this year tended to be smaller than the type of fish last year
There were more space in the pond this year than last year
The best explanation for the observation that the fish are smaller than the previous year is:
The type of fish in the pond this year tended to be smaller than the type of fish last year.