No..............................
An ion has a positive or negative charge. While a covalent bond always has no charge, meaning it is neutral.
The answer is A. The vibration caused by the waves through the air eventually weaken, which is why sound diminishes easily over distance.
Independent would be the amount of sugar given and the dependent would be the amount of cavities
Scientists have control groups so they can have evidence to show the difference between that one and the experimental ones.
And the independent variable is the one that changes because with out it changing you wouldn't get different results.
I could be wrong tho sorryyy! but i hope this helps