Plants create Oxygen, but Oxygen is a natural element.
lungs
Spacecrafts need internal oxygen supplies because there is no oxygen in space.
An oxidizing agent supplies oxygen, and a fuel consumes oxygen.
Oxygen has a higher electronegativity than nitrogen does, so when sharing electrons with hydrogen, the sharing is more uneven in the case of oxygen than it is with nitrogen. Oxygen, in other words, will attract electrons more strongly than nitrogen does and therefore will wind up with a more negative charge (hydrogen, which supplies the extra electrons to the oxygen, has a correspondingly higher positive charge).
The Oxygen Debt is the extra volume of oxygen consumed by muscle tissue after intensive exercise. It is also referred to as recovery oxygen or excess postexercise oxygen consumption (EPOC). EPOC - excess post oxygen consumptionOxygen debt is the amount of extra oxygen required by muscle tissue to convert accumulated lactic acid to glucose and replenish depleted ATP following vigorous exercise.
it supplies oxygen to the heart
it supplies oxygen to the heart
it supplies oxygen to the heart
lungs
Your blood supplies many important things to your cells. Mainly it supplies oxygen and nutrients, such as glucose.
Spacecrafts need internal oxygen supplies because there is no oxygen in space.
answer
you need oxygen:)
blood vessels
Blood
The respiratory system supplies the body with oxygen and expels carbon dioxide.
The lungs supplies the bloodstream with oxygen. When we breathe in, out lungs fill with oxygen and that oxygen is taken to the heart to keep our body going.