Radioactive lichen. Refer to the Lichen Radionuclide Baseline Research project to mo...

Radioactive lichen. Refer to the Lichen Radionuclide Baseline Research project to monitor the level of radioactivity in lichen, presented in Exercise 5.133 (p. 298). Recall that University of Alaska researchers collected nine lichen specimens and measured the amount of the radioactive element cesium-137 (in microcuries per milliliter) in each specimen.

Reference: Exercise 5.133