A. Bases
B. Acids
C. Mixtures
D. Elements
2. Which is NOT an example of a compound?

If birth rates fall below the replacement level, then a country is in which stage of demographic transition? a. urbanization/industrialization b. mature industrial c. postindustrial d. pre-modern

What is a negative influence on community health? a: national health debt b: citizens who drive unsafely c: unreliable public transportation d: stores that sell tobacco to minors

What link in the chain of transmission is described in the paragraph? sarah has been eating and sleeping poorly. she was just diagnosed with pneumonia. tests showed the illness was caused by streptococcus pneumoniae. in the chain of transmission, sarah is the (blank) , and streptococcus pneumonia is the (blank).