What is the principle (indicating) of photosynthesis using in our lab to make the color changes in the two tubes? A. sugar produced to make the color changes

B. remove the CO2 away in tubes by plants photosynthesis

C. O2 released by photosynthesis to make the color changes

D. A & B are correct

From our previous experiment, we examined how many drops a penny can hold - and place drops of salt water on the penny after recording 5 trials each, take the average of each solution.

Cherries for sure do doubt   

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.

Aplant cell has vacuoles and a cell wall