Periods 1, 2, and 8:  Today we began our discussion of 27-2 looking at air pollution, acid precipitation and the greenhouse effect.  Review what we covered.

Period 3:  No class today. :-{(>

Periods 4 and 6:  Today we continued with 27-2 looking at ozone depletion and indoor air pollution. Review what we covered.

Academic Awards tomorrow before chapel!