1. Air enters the nostrils.
2. Air passes from the trachea to the bronchi
3. Air diffuses from the alveoli to the blood cells.
4. Oxygen enters the blood cells.
5. Blood transports oxygen to other cells.
The answer should be rain water
C.
asexual means only one parent while sexual reproduction needs sperm and eggs
D) each parent passes only one factor for each trait to its offspring