PLEASE ANSWER QUICK!Which of these is least likely to show common ancestry? O A. homologous structures
O B. analogous structures
O C. DNA
O D. vestigial structures

Why should the united state be concerned about air pollution in china?

What was the land like over 500 million years ago? what was under the sea?

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.