Why does the right side of your heart contain oxygen poor blood on the left side contain oxygen rich blood

If water were a non polar molecule, how would its properties be different ? a.) water would be a much lighter molecule b.) water would be able to climb up inside plants c.)water would not be able to form hydrogen bonds d.) water would stick together much more strongly

What's the waste product of electrons and pyruvate combining in fermentation?  

The amount of radioactive isotopes contributing heat to earth is greater now than it was when earth was newly formed. question 20 options: true false