To test the Porosity of the hair, one should select a small section of hair at the crown, hold it at the root and the tip, and slide the hair down two to three times slowly. The porosity of the hair is the ability to absorb moisture and may be low, normal or high. A porosity test indicates the category of an individuals hair. It is important since one is able to maintain hair's health than merely just knowing the hair type.
The answer is:C
Explaination
I believe the answer would be d
Effects on Waterways
Fertilizers contain large amounts of nitrogen and phosphorus. When these chemicals runoff agricultural fields into waterways, they can lead to accelerated growth of aquatic plants. Nutrients from fertilizer runoff encourages the growth of nuisance algae through the process of eutrophication.
A person shall consume at least 750
mg of sodium ion daily to remain in electrolyte balance if he/she loses 750 mg/day
of sodium in urine, sweat and feces. Electrolyte is a substance that
can carry electrical current across cell membranes.