A student filled a bag of dialysis tubing with a milky-white starch solution and placed the bag in a beaker of iodine- water solution as shown in the diagram below. An hour later, the student observed that the starch solution had turned blue-black (positive test for starch). What is the most probable explanation for the change?

The iodine diffused into the bag.

Explanation:

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.