What sleep stage is associated with lack of core muscle tone?

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

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.