During production of a drug, all work area surfaces must be disinfected using sterilized disinfectants. which of the following statements about disinfectants are true?

The answer is C.  A drug is any substance that alters the normal functioning of the body.

A drug is any substance other than the nutrients essential for body changes the normal functioning of the body. It may be physiological or biological which is temporary. A drug is used in the diagnosis, treatment or prevention of a disease to relief the discomfort. A drug producing a state to relief the discomfort. A drug producing a state of casual when used in continuation or in excessively causes addiction known as drug abuse.    

i think the miocene epoch spans the time from 23 million to 12 million years ago.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.