Which of these is not a natural source of radiation? A) Food and drink
B) medical x-rays
C) Cosmic rays

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.

Compare the patterns of the two waves shown in the image. which statement is true about these waves?

Which factor listed below most likely results in the loss of genetic variation from small populations? question 2 options: mutation migration genetic recombination genetic drift