MacConkey agar uses lactose as a differential agent, however it is not as specific as an EMB test in terms of types of coliforms detected. This makes the MacConkey test useful in a clinical setting but not necessarily useful in environmental microbiology. Could MacConkey agar be altered by using a carbohydrate other than lactose for differentiation

creative diagnostics is a professional biological commercial company,specializing inassisting clients with t cell differentiationstudies.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.