Which gas is most abundant in earth's atomsphere

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

Lymphatic vessels remove excess fluid from tissues. often after mammexront( the surgical procedure to remove of all or part of a breast) the lymphatic vessels draining the arm are damaged. explain a consequence of this damage. what can be done to reduce the symptoms?

Donde se encuentra el adn nuclear en un organismo eucariota?