Earthworms like the one scene here 11 saw your bunny wondered how changes in the moisture content of the soil would affect the movement of the worms he want to design an experiment to test his idea what would be benny’s manipulative variable in this experiment

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.

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d

Which is abiotic? a. tree sap b. insect c. sunlight d. wood table