What is cross-contamination?
a. The transfer of harmful microorganisms from one food or surface to another
b. The presence of harmful microorganisms in food
c. When someone becomes ill after having eaten food containing toxins
d. When more than two people become sick from eating the same food

Nucleic acids offer variability because they contain alternate forms of genes called .

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.

Which of these is not an obstical to the future of space exploration? fundingresearch ideas technologytime