Birth control injections they are 98% effective
Cardiovascular so you can pump oxygenated blood through the heart
I think it is.... subjective ? idk i am not quite sure
The liver digests food by producing bile to break down fats, removing toxins and breaking down and storing some vitamins and minerals. The pancreas produces enzymes to help break down proteins, fats and carbohydrates.
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I’m sorry if this isn’t what you’re looking for, if it isn’t just comment and i’ll see if i can help.
