My sister told me i had a bee's heinie

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Can someone me with 3 and 4 plz. this is for masteries test.