Please help my grade went from a 100% to a 44% after getting a 1/5 on this

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

How are primary producers important to the alligator's energy supply

Dawn mistakenly took a multivitamin intended for men that contains 90 mg of vitamin c (or 100% of the vitamin c rda for men). if the multivitamin was dawn’s only source of vitamin c for the day, what percentage of the women’s vitamin c rda did she consume? a. 52% b.83% c.100% d.120%