Www.chemactive

GCSE BIOLOGY PHOTOSYNTHESIS QUESTIONSHEET 6 CONTINUED The bar chart shows the results of this investigation. concentration of hydrogen carbonate (%) time for indicator to change colour (minutes) 0 2 4 6 8 10 12 14 16 18 20 0.2 0.4 0.8 1.2 1.6 2 (c) What was the effect of increasing the hydrogen carbonate concentration from 0.2 to 0.4%? ................
................