VOC's were introduced in "What Causes Air Pollution", the abbreviation for VOC is ...

a. Very Organic Chemicals.

b. Volatile Organic Chemicals

c. Volatile Organic Compounds

d. Very Organic Compounds

Describe five factors that influence the value of fuel

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins