This is because the electrons are up around the oxygen more than they are around the hydrogen. The electrons are spinning around but they're around the oxygen more than they are around the hydrogen. This makes them polar because they have a charge on one end of the molecule. In a nonpolar molecule electrons are evenly distributed.
As lungs expand and fill with air, the diaphragm lowers enabling for the lungs to spread and for more air to enter. When you exhale, the diaphragm retracts and helps push out CO2 out of the lungs.
Answer:
This statement is false. Borders of plates do change when they shift and the shifting of plates is inevitable.
Explanation:
Calyx and corolla? I don’t know