This was because the plants were turning carbon dioxide into oxygen and carbon by a process called PHOTOSYNTHESIS.
(This; was; because the plants were turning carbon dioxide into oxygen and carbon by a process) (the plants; were turning; carbon dioxide; into oxygen and carbon) (a process; called; PHOTOSYNTHESIS)
This the plants a process
was were turning called
because the plants were turning carbon dioxide into oxygen and carbon by a process
carbon dioxide into oxygen and carbon
PHOTOSYNTHESIS