The red blood cell lives for up to about 120 days.
the first answer as blood needs to be oxygenated to be passes round the body then when its deoxgenated it will return to the heart to be pumped around the body again
Answer: Well females can potentially switch between sexual and asexual reproduction, but males cannot clone themselves, while parthenogenesis make it possible for females to reproduce without males.
Explanation:
las plantas crean oxígeno que hace funcionar a todos los organismos vivos. que establece que si no creamos dióxido carbono, ellos sufrirán.