I believe the answer would be bone.
X-rays and CT scans and MRIs
Answer:
A. The National Resource Center for Health and Safety in Child Care and Early Education.
Explanation:
All of the information like health based safety standards as well as licensure regulations of a state are maintained by The National Resource Center for Health and Safety in Child Care and Early Education. There is a whole data base available for the overall state regulation. The overall all states data is maintained on the servers to be readily available for registered teachers.
Toxic chemicals are mostly found in waste sites where they dump old chemicals and with that, that could cause health problems because they could either dump it into the oceans where the life is or they will burn it causing pollution.
Hope this helped :)<span />
1. Infected needles
2. Insect bite
3. Organ transplant
4. Blood transfusion