Looks correct but the second to last I would of put abiotic and biotic factors but I don’t know what’s right for you
3+
So, compounds of boron contain boron in a positive oxidation state, generally +3. The sum of oxidation numbers of all constituent atoms of a given molecule or ion is equal to zero or the charge of the ion, respectively. ... In most of the stable compounds of boron, its oxidation number is +3
It would be 4:15 . Just add 3:30 plus 45 too get the answer
No because you are supposed to do this

T for time and V for velocity or acceleration so what you do is take the two numbers
D= 3/12 it goes 12 meters every 3 seconds so you devide 12/3

So for every second the ball roles 4 meters!
Hope this helps! :)
Answer:
The property that determines whether an acid is weak or strong is its ability to dissociate and form ions.
Explanation: