Which of the following is NOT a function of the body system shown above? Protects internal organs such as the brain and heart.

Transports oxygen and nutrients to the cells.

Produces red blood cells and some white blood cells.

Shape and support of the body.

Transports oxygen and nutrients to the cells.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.