Similarly, we might think of plants using carbon dioxide and sunlight for photosynthesis and producing oxygen and glucose ... The hydrogen ion (produced when carbonic acid decomposes) LOWERS the pH of ...
Independent variable - pH level Dependent variable - Time taken for starch to be broken down. Control variables - Temperature, volume and concentrations of enzyme solution and starch solution.
This process, called photosynthesis, is essential to the global carbon cycle and organisms that conduct photosynthesis represent the lowest level in most food chains (Figure 1). Most living things ...