Answer:
skin appendages and physio-chemical properties
Explanation:
skin appendages can redirect and or stop the absorption of the drug as well as the physio-chemical properties of the drug itself that make it harder for the skin to absorb
I think that C. 30 is the minimum recommended spf for sunblock.
Assessing the health status of the patient before conduction an exercise test is important because the patient may have health conditions that would interfere with the exercise test.
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