16. Grounding electrodes are connected to the grounding bus by a stranded copper conductor known as the

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

c. 75.7

i think that is the right