24. The use of both pollen and spores in forensic studies is based on: a. Baird's principle of exchange.
c. Lockhart's principle of exchange.
b. Locard's principle of exchange.
d. None of these choices.

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%