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Direction: Write TRUE if the statement is correct or FALSE if it is incorrect.


________1. There has been enough evidence to support that extremely low frequency (ELF) magnetic field is associated with leukemia (a blood cancer) in children.
________2. More than half (54%) of the Sun’s radiation is ultraviolet radiation.
________3. Ultraviolet A can cause skin aging while ultraviolet B can cause skin burning.
________4. X-rays and gamma rays are both high-frequency ionizing radiation.
________5. The risk for developing cancer is highest for those exposed to cancer-causing agents at young age.