. Look up current ocean pH values. How do the current values compare to those from previous years? ((my answer: 8.1 pH today and 8.2 pH previously (slightly basic with a 0.1 pH drop). This represents a 25% increase in acidity over the last 2 centuries.)). Next, consider what you have just learned about algae and how the chemistry of the indicator used in the experiments you just performed works. Hypothesize why oceans are at their current pH. How is the pH of the ocean changing and why? How might this affect the organisms that live in the ocean?
