What is an explanation of why producers are always found at the lowest trophic level? a) producers are larger than consumers. b) consumers are eaten by a variety of producers. c) producers convert light energy into chemical energy. d) producers are found in fewer numbers than consumers.

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.