A star’s protostellar evolution is finished when the core temperature reaches

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

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.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?