Standard precautions apply to
1. blood
2. all body fluids, secretions, and excretions
3. intact and nonintact skin and
4. mucous membranes.

Standard precautions apply to blood, intact and non intact skin, mucous membranes and all body fluids, secretions and excretions except sweat regardless of whether they do or don't contain blood.

Explanation:

Standard precautions are the set of rules which are basically  meant for controlling the infection used to prevent the spread of disease that can be acquired through  or when in contact with person with blood, body fluids, non intact skin( including rashes) and mucous membranes.

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affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.