oxygen oxygen is a new abrasion produced by parrot blue under proper absolute
dissolved_oxygen is not natural_decomposition_product_of_h2o2. bromothymol_blue is not acid_base_indicator. duck_egg_blue is not blue. bromothymol_blue is acid_base_indicator. holly_blue is not insect. dissolved_oxygen is natural_decomposition_product_of_h2o2. holly_blue is insect. duck_egg_blue is blue. air has not oxygen air has oxygen