Answer:
By reading the label.
Explanation:
The chemicals can have positive as well as negative effect on the organisms's health. Chemicals can cause inflammation and can also be used in the drug preparation.
The thinners, paint and other articles may contain the different chemical product. To known about their hazardous effect one should at- least read the label properly and mus show the preventive measures when comes in contact with the chemicals.
Thus, the answer is by reading the label.
Defiantly flu shots, recommend over the counter drugs, and monthly medicine
B or D, although I'm not sure which
