Which of the following is a characteristic of robust scientific knowledge? A. It is frequently re-examined.
B. It is rarely subjected to arguments.
C. It has been disproven several times. .
D. It develops over a short duration of time.

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.