B
Anaerobic respiration produces ethanol in plants and some other organisms and lactic acid in animals
In order for me to assist you, you must attach an image of the graph. :)
Remember that a controlled variable is a variable that stays the same thoughout the experiment.
it wouldn't be a. because two different wires were used
the final length of the wax would be your dependent variable, so it wouldn't be c.
the thermal conductivity is the independent variable so it isn't d.
the original length of the wax was the same for both.
So B is your answer.
<span>living things ................</span>
