The answer is Ultraviolet Light
The easiest way for us to obtain a sustainable amount of Vitamin D is by exposing our self to morning sunlight ( which contain ultraviolet light)
Often time, we don't consume enough vitamin D and our body need to get it from our bones, and in order to do that, it need to be activated through enough exposure from sunlght
The main function of the muscular system is to move
Answer: Throw technique
Explanation:
Survival floating is a survival technique when it comes to swimming, reach technique is considering survival technique when someone is in a dangerous situation and they CAN reach something important to them at that moment(for example telephone), wearing helmets is also a good response in an emergency because it can save us(for examples if we are riding a bike).
Throw technique can be only accepted when someone is trying to defend themselves but it is not an appropriate response in an emergency.