What is a characteristics refers to a savannah biome but not to a temperate prairie biome?
a. isolated trees
b. primary plant life is thick grasses
c. tropical or subtropical location
d. herds of grazing animals

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.