1 Drowning can occur in as little as 20 seconds. 2  Don't put your life at risk trying to save your child. 3  If you must enter the water to perform a rescue, bring a flotation device with you. 4  If your child is unconscious and not breathing, call 911 right away.
This vitamin plays an essential role in vision, particularly night vision, normal bone and tooth development, reproduction, and the health of skin and mucous membranes (the mucus-secreting layer that lines body regions such as the respiratory tract).
- only one-thousandth of the body's vitamin a is in the retina while much more is in the cells lining the body's surfaces - there the vitamin participates in protein synthesis and cell differentiation, a process by which each type of cell develops to perform a specific function.