What is The effects of fluoride ?

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell

A) equal lines b) parallel lines c) perpendicular lines d) none of the above