Name the unit of electromagnetic energy which release up to 90 percent of the cancer-fighting energy, as they penetrate the skin.
A. photon (X-rays)
B. neutrons
C. protons
D. phototropism
Answer:A
Name the unit of electromagnetic energy which release up to 90 percent of the cancer-fighting energy, as they penetrate the skin.
A. photon (X-rays) B. neutrons C. protons D. phototropism