Experiment one, because she repeated the experiment several times.
A. The arrangement of particles within the watermelon changed.
Because though there is a lot of available water, an ever shrinking 3% is freshwater, which comes from groundwater and streams. The ocean is salinated and in order for it to be fit to be used by humans for domestic needs or for drinking, it needs to undergo a huge desalination process which costs lots of money and time.
Carbon dioxide is used to build sugars. I think it's the only one
