According to scientific thought, when does one species of organisms become two species? A) when one population cannot interbreed with the other population

B)when populations become separated from one another

C)when populations compete for the same resources

D)when one population becomes extinct

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.