Natural selection on

peppered moths vary in darkness. some have a lighter coloration and some have a darker coloration. before the industrial revolution only 2% of the moth population was darker coloration. after the industrial revolution, 95% of the population showed this darker coloration. birds eat the moths they can see on the trees.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

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.