the secondary factor like (sun light) these conditions are suitable living organisms for example bacteria , mold , insects will rapidly multiply using drug as a source of nutrient .

some drugs which contain mucilage quickly absorb moisture and become a sticky mass

increase in temperature in combination with moisture may Just Accelerate enzyme activity

decrease in temperature in combination with moisture may a . Accelerate enzyme activity . b . loss of volatile constituents ex : volatile oils .

Increase in temperature in combination with moisture may

An increase in temperature in combination with moisture may a large temperature rise will lead to a loss of volatile constituents ex : fixed oils.

direct sun light can cause

Oxygen : this factor assists in the resinification of volatile oils and in the rancidification of volatile oils .

• Different mites found usually include Tyroglyphces siro ( Flour mite ) and Aleurobius farinae ( Cheese mite )

The container used for storage and its closure must not interact physically or chemically with the material within in any way which would alter its composition .

Periodic spraying of the premises with insecticides will help to prevent the spread of infestation

Each stock should be inspected regularly and the material found to be contaminated is best to be destroyed by

Moisture and heat and condition is the most suitable for the retardation of living organisms

condition is the most suitable for the retardation of living organisms

Is the important way classification

Natural products is primary metabolites

Morphine is ?

Heroine is