True or False: Everyone is immune to effects from natural background radiation.

The statement is false because not everyone is immune to the effects of natural background radiation. Natural background radiation comes from various sources, such as cosmic rays, radon gas, and terrestrial radiation, and affects all individuals to some extent. While the human body is exposed to this radiation daily, the level of exposure and the resulting biological effects can vary based on several factors, including geographic location, lifestyle, and existing health conditions.

Some individuals or populations may be more sensitive to radiation exposure due to genetic factors, age, or pre-existing health issues that impair their ability to cope with the potential damage caused by ionizing radiation. The concept of "tolerance" varies widely among the population, and certain groups may experience heightened risks, particularly from long-term exposure or higher levels of radiation, such as those found in specific occupational settings or certain geographic regions with elevated natural radiation levels.

In summary, the idea that all individuals are immune overlooks the variability in human responses to radiation; thus, the correct answer is that it is false to claim that everyone is immune to its effects.