Cleaning agents should be used when trying to prevent infection and when complying to regulations. that is if they are medical cleaning agents. but household cleaning agents also are used to clean and disinfect objects such as infant toys, clothes, food utensils and cutlery, floors and tiles, glass, etc.
examples of cleaning agents are alcohol, dish soap or laundry detergent, and bleach, and hydrogen peroxide.
-hope this helps
<span>The question is asking us to define the term "duration" when used for exercise - and in fact it is d. how long a work out or exercise lasts. For exmple, a duration of an exercise could be 90 minutes and the fruquency, that is how often you exercise, could be twice a week (this would be c, so if the question was asking for frequency, we would answer C)</span>
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True. Physical exercise does not input mental stress.
