Answer:
An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Explanation:
pretty sure its D
Electrical output - they generate electricity
found in power plants - THat is where we have our energy from
mechanical input - this turns the magnet inside the coil
Bronchus are the two in number and forms left and right , so it will appear in lungs !!