Final answer:
Radiation can alter cell function and cause long-term effects like cancer and genetic defects. It is crucial to manage radiation exposure.
Step-by-step explanation:
Radiation can be harmful to living organisms because it can alter the molecular structure and function of cells, leading to malfunctions in cell processes and damage to DNA. The most insidious thing about radiation is its long-term effects, such as cancer and genetic defects.
These effects can occur even at low doses of radiation and are cumulative over time. It is important to manage radiation exposure and take precautions to protect our health and the environment.