The plant releases the oxygen into the air while the hydrogen is combined with carbon dioxide, which the plant takes from the air.
(The plant; releases; the oxygen; into the air; T:while the hydrogen is combined with carbon dioxide) (the hydrogen; is combined; with carbon dioxide) (carbon dioxide; takes; from the air)
The plant the hydrogen carbon dioxide
releases is combined takes
the oxygen into the air T:while the hydrogen is combined with carbon dioxide
with carbon dioxide
from the air