An experiment can do what?

a. illuminate the hidden variable
b. prove causation
c. show the hidden variable
d. show how observation works

Which of the following refers to treating all patients or first aid victims as a potential source of bloodborne pathogens by taking all precautions to prevent contamination?

In which part of an interview would you have informal conversation to build rapport? opening body closing

1. any body of surface water in which water is stored is a(n) aquifer reservoir channel floodplain 2.which of the following is a source of groundwater replenishment? seepage into springs infiltration from the surface evaporation all of the above 3. watersheds are bounded by points of high elevation called drainage basins. true false 4.non-native species can harm watershed environments by competing with native species for food. true false