The respiratory system always needs iron. The red blood cells are in charge of the transport of O2. They need iron to do this.
Hope this helps! :)
The "set-point theory" implies that each individual is genetically programmed to carry a particular amount of body weight.
The set point is the weight range in which your specific body is programmed to work. The set point theory trusts that a man's body will battle to keep up that specific weight range.
Structure L and I are the superior and inferior vena cava. They bring de-oxygenated blood from the body into the right atria.
It is C beacuse you would produce large quantities of the neurotransmitter to see if it could be used as a potential medication.
Yes the weaker it is the more easy it is to prey on