When coal is burned completely into carbon dioxide and other gases, the total amount of matter of the gases
a. is less than the volume of the coal
b. is less than the mass of the coal
c. exceeds the mass of the coal
d. equals the mass of the coal
e. equals half of the volume of the coal

Which best explains how this maneuver unblock a person's airway?

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Which measure of an earthquake depends on how close you are to the focus?