Pioneer species move into an area after which event?

the formation of a climax community
a disturbance that forms new land without soil
a disturbance that clears away all plants
the enrichment of soil by plants

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%