Soap reduced the surface tension of water because only 10 drops of water and soap mixture were added to the penny before the liquid spilled over, compared to 50 drops of water without soap. Sources of error include variations in the volume added with each drop, the time between drops, and the surface of the penny being cleaned as the water/soap mixture is added in each trial. The experiment could be improved by observing other indications of surface tension, including measuring the contact angle.]

Determine if the following statement is true or false. if true, choose true. if false, choose the rewording that is true. according to the law of independent assortment, alleles for each gene are inherited together so that they always stay together. according to the law of independent assortment, offspring express a combination of their parents' traits. according to the law of independent assortment, alleles for a characteristic split during meiosis and combine during fertilization. true according to the law of independent assortment, alleles for each gene are inherited independently so that no two alleles stay together.

Describe characteristics of a good respitory surface

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.