Which dose is associated with temporary sterility and temporary epilation?

The dose associated with temporary sterility and temporary epilation is indeed 200 rad. At this level of radiation exposure, the effects on biological systems start to become noticeable.

For temporary sterility, radiation can affect the reproductive organs, leading to a temporary loss of fertility. This occurs because radiation can damage the germ cells, which are critical for reproduction. The specific threshold for temporary sterility varies by gender, but around 200 rad is a commonly referenced level where such effects can be observed.

Similarly, temporary epilation refers to the loss of hair, and radiation exposure can affect the hair follicles. Hair follicles are sensitive to radiation, and doses around 200 rad can cause hair thinning or temporary hair loss, which is typically reversible once exposure is minimized or eliminated.

Other doses listed are significantly higher. For instance, 10 rad is generally too low to induce these effects, while 300 rad and 1,000 rad are associated with permanent damage and more severe biological effects, beyond just temporary conditions. Hence, 200 rad is the appropriate dose where both temporary sterility and temporary epilation are likely to occur.