This invention made is possible to see cells and cell organelles. Telescope MRI Mircoscope

Who is better, messi or cristiano, i need this for a chemistry class. asap

Why do cells appear different in distilled water than they do in 10% salt water?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.