Human organ systems work together in many ways. Which statement accurately explains the relationship between two body systems?A. the excretory system regulates the temperature of the integumentary system. B. The skeletal system delivers nutrients absorbed by the endocrine system. C. The digestive system delivers oxygen absorbed by the respiratory system. D. The nervous system regulates the movement of the muscular system.

Option D. The nervous system regulates the movement of the muscular system.

Explanation:

The nervous system regulates the movement of the muscles as they receive signals from both the brain and nerve cells

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."