Answer the following statements true (T) or false (F)
1. Fluoridation is a water treatment process that reduces tooth decay by 5% to 40% and has been used successfully in the United States for more than 70 years.
2. The diversion of water from lakes and rivers for irrigation is reducing the amount of water available to local communities.
3. Polychlorinated biphenyls (PCBs) have been linked to long-term health consequences including cancer and damage to the central nervous system.
4. Taking a bath typically uses less water than taking a shower.
5. The biggest single component of household trash by weight is yard waste.
1. True
2. True
3. True
4. False
5. False
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Which of the following blood tests measures how long it takes for a clot to form?
A) erythrocyte sedimentation rate B) culture and sensitivity C) hematocrit D) pro-time
A patient is diagnosed with AIDS when CD4 T-cell counts _____
a. rise markedly after T-cell activation b. fall below the CD8 T-cell count c. fall below 1000 cells/?l d. fall below 500 cells/?l e. fall below 200 cells/?l.
A specialist in treating disease of the stomach and intestines is a:
cardiology gastroenterology gastroenterologist cardiologist
The ability to use the senses with the body parts to perform motor tasks smoothly and accurately is called
A. reaction. B. coordination. C. balance. D. agility.