Explain why we become tanned after sitting in the sun

The nutrient facts label on a food package lists the following: iron 50%. what does this figure indicate?

Bulimia nervosa cannot be prevented, but it can be treated if diagnosed early. true or false? answer- false

Which activity causes the greatest risk of driving fatalitiesa. driving at nightb. driving while distractedc. driving with a passengerd. driving on a clear day