Question

which waves are bad for you in long exposures (sun burn)
gamma
radio
ultraviolet
microwave

Explanation:

Sunburn is caused by long - term exposure to ultraviolet (UV) radiation. Gamma rays are highly energetic and not the main cause of sunburn from the sun. Radio waves and microwaves have much lower energy and do not cause sunburn. So among the given options, ultraviolet waves are the ones that cause sunburn with long - term exposure.

Answer:

ultraviolet (the option in the green box)