Part A: The result of the aerating of limewater remain the same there were no changes. However, the test tube we breed came cloudy. 
Part B: The beaker that was aerated turned blue/green the beaker with the other distilled water that was breathes into turn orange/yellow. Therefore, aerated was neutral and breathed into one was strong acid.
Part C: breast taken in one minute were 28, 25 and 18. The numbers in 30 seconds are basically half the amount of one minute except are kind of higher, for example 18 breathes per 30 seconds. This means we should be taking in more breathes.
Questions:
Part A:
1). The change in color in the limewater indicates that the CO2 we breathe out reacted with the limewater to create a solid precipitate
2). The purpose of the control test tube is to see the difference between both the tubes and what causes the changes to the limewater, it shows which variable causes changes and in this case it was our breathing out into the limewater.
Part B:
3). The change in color of the universal indicator means that the air we breathe out is as Citic and the aerated beaker is neutral.
4). The purpose of the control beaker is to again see what to combination show results and to compare.
5). In the test beaker of water, both of the beakers remained the same. However, when the universal indicator was added the beaker that was aerated turn to neutral and a bluish green color and the beaker that was breed into turn acidic, into a orangey yellow colour.
7). Are blood does not become acidic because our blood contains HHB, hydrogen with hemoglobin molecules which do not become acidic.
8). The breathing rate at 30 seconds increase compared to the rate in 60 seconds. I think since they only have 30 seconds to breathe it cost them to hyperventilate and breathe faster in the 30 seconds.
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