The protein inside (a) red blood cells that carries oxygen to cells and carbon dioxide to the lungs is (b) hemoglobin. Hemoglobin is made up of four symmetrical subunits and four heme groups. Iron associated with the heme binds oxygen.
Its the one all the way at the bottom
The original cell is divided into two new cells
Plowing with machines, irrigating with drip systems, and these are all modern agricultural methods.
