The high light intensity was 700 micromoles of photons/m2/sec, while the low light intensity was 30 micromoles of photons/m2/sec. The average change in dissolved oxygen is the dependent variable. Light intensity, micromoles of photons/m2/sec, is the independent variable. Two dependent experimental variables, algae high light intensity and algae low light intensity, were compared by means of the independent variable (Figure1). The high light intensity showed an average change in dissolved oxygen per L of 16.5mg/L, while the low light had 5.88mg/L. Figure 2 shows the comparison between the control substance, algae no light (tinfoil), between the two light intensities. Low light intensity change in dissolved oxygen per L for the tinfoil algae was -0.64mg/L, while high intensity light was -0.47mg/L. The change in dissolved oxygen per L for the control, water, were also taken. The low light intensity change 0.18mg/L, and the high intensity light change was -0.23mg/L. The graphs show the average change in dissolved oxygen per L for each experimental and control variable
The high light intensity was 700 micromoles of photons/m2/sec, while the low light intensity was 30 micromoles of photons/m2/sec. The average change in dissolved oxygen is the dependent variable. Light intensity, micromoles of photons/m2/sec, is the independent variable. Two dependent experimental variables, algae high light intensity and algae low light intensity, were compared by means of the independent variable (Figure1). The high light intensity showed an average change in dissolved oxygen per L of 16.5mg/L, while the low light had 5.88mg/L. Figure 2 shows the comparison between the control substance, algae no light (tinfoil), between the two light intensities. Low light intensity change in dissolved oxygen per L for the tinfoil algae was -0.64mg/L, while high intensity light was -0.47mg/L. The change in dissolved oxygen per L for the control, water, were also taken. The low light intensity change 0.18mg/L, and the high intensity light change was -0.23mg/L. The graphs show the average change in dissolved oxygen per L for each experimental and control variable