After 24 hours, the amount of gas that accumulated at the top of the inverted test tube is measured. The students conclude that the light source is causing the water to evaporate, causing water vapor to fill the top of the tube. The best alternative explanation of the differences between the setups is that the -
(1 point)
Responses
light caused the elodea plants to photosynthesize, releasing O2 gas
light caused the elodea plants to photosynthesize, releasing O2 gas
metabolism of the elodea plants absorbed CO2 from the water
metabolism of the elodea plants absorbed CO2 from the water
gravity increased the downward flow of the trapped water
gravity increased the downward flow of the trapped water
heat from the light source caused the escape of dissolved gas.