Aim: The aim is to investigate how increasing carbonate in water can affect the rate of photosynthesis. Introduction: The rate of photosynthesis can be increased or decreased in many different ways. For example, by adding substances like alkaline or salt to the water, you can increase or decrease the acidity or basics, if the water has too much acidity, it can often delay the rate of photosynthesis, often stopping the rate of photosynthesis in the plant, which will possibly lead to killing the plant. Another option is to control the strength of the light by controlling the distance of the light from the plant. If the light is a far distance from the plant, the strength of light for the plant would be very weak, therefore decreasing the rate of photosynthesis. Another alternate but simple way is to change the colored light by comparing different colored ﬁlters and their effects to change the rate of photosynthesis. Some colors like red and blue increase the rate of photosynthesis, while colors like yellow and green decrease the rate of photosynthesis. Many people would choose the factors that have just been listed, however there are so many other interesting possible factors when investigating other ways in which you can affect the rate of photosynthesis, Therefor, for this experiment the independent variable chosen is the amount of carbonate in water.
Hypothesis: Carbonate is known to increase the rate of photosynthesis when mixed with water, this is because plants inhale carbon dioxide which is what carbonate is made from along with other bases. By diluting carbonate in the water, this increases the amount of carbon dioxide in the water, which then increases the rate of photosynthesis, technically increasing the amount of bubbles within the experiment. However, too much carbonate might slow down the rate of photosynthesis within the plant. This is