What was the biggest source of contamination of fresh drinking water in early civilizations?
A. Animals living close to people
B. Lack of a water source (desert conditions)
C. Wells that are not dug deep enough
D. Aqueducts were not built high enough
Select your answer:
Topics:
The Cardiovascular System: Blood Vessels and Hemodynamics Healthcare Systems and Insurance Neurological Concepts Balanced Diet Protein and Amino Acid Metabolism Population Ecology Vision (AP Psych) Viruses Healthcare Careers Bacteria & Disease The Vascular System and Blood Flow DNA and Genetic Manipulation Blood Pressure and Blood Vessels Fish Health Management Child DevelopmentOther quiz:
Blood › ViewIdentify the definition of the medical term:HYPO-
A. Below
B. Up
C. Removal, excision, resection
D. Cut into, incision, section
E. Above
Nutrition form 2 › View
Which of the following minerals help in strengthening the bones and teeth of a human?
A. Calcium and iron
B. Sodium and phosphorus
C. Iodine and sodium
D. calcium and phosphorus