What releases oxygen during the day but not during the night?
elephants dogs hydrocarbons blue pine Conifers vegetation humans Fuel cells
A B C D E F G H
Plants include blue pine, hemlock, spruce and oak.
Blue pine releases oxygen during the day but not during the night
What releases oxygen during the day but not during the night? (A) elephants (B) dogs (C) hydrocarbons (D) blue pine (E) Conifers (F) vegetation (G) humans (H) Fuel cells