Skin cancer. Prolonged exposure to ultraviolet radiation from the sun can lead to melanoma and other skin malignancies. Clear evidence establishes ultraviolet radiation, especially the non-ionizing medium wave UVB, as the cause of most non-melanoma skin cancers, which are the most common forms of cancer in the world
One liter of spit each day
Answer:
Babies first develop muscles in the head and neck.
Explanation:
Babies develop in a cephalocaudal direction. This means that they develop from the head downward. First the head and neck, then trunk, then extremities.
Answer:
Keeps our mind sharp.
Explanation:
People aren't usually very active at night (depending on the person) so... we socialize with others usually during the day.
