1) Arithmetic density- the number of people per square unit of land
2) Physiologic density- Is the number of people per square unit of farmland.
3) Agricultural density- is the number farmers per unit of farmland.
Answer:
Coal and oil (if there are two answers)
<span>True. Pocket mask is otherwise known as CPR mask, pocket face mask is a device used for the artificial ventilation during a cardiac arrest. When giving aid the mask should be applied to the patient's face using thumbs of both hands. Then stand on one side of the victim and give rescue breaths.</span>
