what releases oxygen during the day but not during the night?
h2o tulips Oak humans flowers Trees Conifers gravity
A B C D E F G H
Bulbs planted over the years include tulips and daffodils.
tulips release oxygen during the day but not during the night
what releases oxygen during the day but not during the night? (A) h2o (B) tulips (C) Oak (D) humans (E) flowers (F) Trees (G) Conifers (H) gravity