Answer:
Lungs supply oxygen carried by blood to cells of the body. The cells which are responsible for the transportation of oxygen is hemoglobin. When oxygen rich hemoglobin reaches a cell so the oxygen is unloaded and carbondioxide which is produced as a waste product is loaded in hemoglobin. Again this hemoglobin goes to the lungs and dispose carbondioxide there and repeat the process again.
Specific dye bind to specific nucleotides.
The number of neutrons in each atom
If a person built a bridge that didn’t have water holes under it than the other side of the river would drought and kill all animals depending on that sorce of water
