Most likely the students are using a crude measurement of time, like a stopwatch. They would get the best results with a scientific apparatus that uses a computer and optical sensors. Even recording their dropped objects with a video camera and analyzing the video would give more consistent results. Results will also vary greatly if different people are taking the time measures instead of one person making all measurements.
C) Increases genetic diversity is not an advantage of asexual reproduction
Pavlov's dog stopped salivating to the bell when the food was no longer paired with the bell. This is called:
extinction
The answer is Biological Resistance, hope this helps. Please mark brainliest.