Without enzymes, the chemical reactions in your body would a. happen too fast b. occur too slowly to benefit the cell c. require a different ph d. occur at much the same rate as they do with enzymes

i say b b b b b b b b b b b b b b b b b b b b b b b b

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it