Which two organ systems work together to provide cells with oxygen and to remove carbon dioxide from the body?
(5 Points)

Lungs

Explanation: The two organ systems that work together to provide the cells with oxygen and remove carbon dixoide from the body are the lungs.

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above