The most widespread nutritional deficiency in the world is iron deficiency. populations with the highest risk for iron deficiency include infants, young children, menstruating females, and pregnant women. fill in the blank about iron deficiency. iron deficiency in its earliest stage results in a decrease in blood levels of . hephaestinb. ferroportinc. ferritind. transferrin

Asample of digestive juice was removed from the stomach of a pig. the juice was placed in a test tube along with some grains of wheat. a second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. the test tubes were kept for 8 hours at 40 degrees c. after 8 hours, the grains inside the digestive juice had broken into tiny particles. the grains of wheat, in the water, were wet but otherwise unchanged. what is the control group?