.Two different species of bacteria are examined. Scientists find that species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations

The first statement is

The part of a scientific argument must be supported by valid data is evidence. this will make the correct answer choice b. 

We also sweat while we exercise. while we exercise, we do burn glucose and in the process generate the energy we need. that energy also causes us to heat up and as part of our temperature regulation mechanism, we sweat to get rid of the excess heat. and that water that we sweat has a fairly large amount of mass which we then lose.