A. acute
Acute exposure is short time and the negative effects do not accumulate as in chronic exposure.
I believe it's either a or d, sorry I cant be of more help.
Answer:
1. HIV finds the white blood cells, called cd4 cells. HIV gets inside the cd4 cell and makes copies of itself. Then, HIV kills the cd4 cell and the new HIV copies find other cd4 cells to get inside and start the cycle again. HIV kills immune system cells that help the body fight infections and diseases.
2. Untreated, HIV typically turns into AIDS in about 8 to 10 years. Leading causes of death for HIV patients were accidental death and suicid3.
3. There is no effective cure for HIV. But with proper medical care, you can control HIV. Treatment Reduces the Amount of HIV in the Blood
The best definition of the vehicle of contamination simply refers to B. Any source of biological contamination.
- Contamination simply means how food can be harmful to human beings. When foods aren't covered or cooked properly, they may be contaminated. For example, when food is not covered and flies enter into it, this can result in food contamination.
- It should be noted that vehicles of contamination help micro-organisms as they enable them to move from one place to another.
- From the options given, the vehicle of contamination is the source of biological contamination.
In conclusion, the correct option is B.
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