When a cup of hot chocolate cools from 90°C to 80°C, which of the
following is happening to the molecules of the liquid? *
O
Their average distance from adjacent molecules is increasing.
Their rate of motion is decreasing.
O
Their valence electrons are being lost.
O
Their positions are becoming fixed in crystal.

i am going to guess that it is co2.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.