readily absorbs UVB radiation ultraviolet exposure Ultraviolet Radiation: How it Affects Life on Earth http://earthobservatory.nasa.gov/Features/UVB/ Ultraviolet Radiation: How it Affects Life on Earth Ultraviolet Radiation: How it Affects Life on Earth Ultraviolet Radiation: How it Affects Life on Earth Ultraviolet Radiation: How it Affects Life on Earth UVB rays UV radiation http://earthobservatory.nasa.gov/Features/UVB/ Ultraviolet Radiation: How it Affects Life on Earth Ultraviolet Radiation: How it Affects Life on Earth http://earthobservatory.nasa.gov/Features/UVB/ harmful UV rays of the sun and the Earth’s surface Detaljnije na NASA Earth Observatory NASA Earth Observatory: Ultraviolet Radiation Ultraviolet Radiation and Life on Earth - EARTH OBSERVATORY UVB rays Ultraviolet Radiation: How it Affects Life on Earth harmful UV rays of the sun and the Earth’s surface Ultraviolet Radiation: How it Affects Life on Earth especially DNA http://earthobservatory.nasa.gov/Features/UVB/ Ultraviolet Radiation: How it Affects Life on Earth can cause sunburn and cataracts Ultraviolet Radiation: How it Affects Life on Earth especially DNA Ultraviolet Radiation: How it Affects Life on Earth https://earthobservatory.nasa.gov/Features/UVB/ Ultraviolet Radiation: How it Affects Life on Earth ultraviolet radiation readily absorbs UVB radiation Ultraviolet Radiation: How it Affects Life on Earth