They undergo a process called photosynthesis , where they convert the energy of the sun into usable energy for generation of their cells.
(They; undergo; a process called photosynthesis , where they convert the energy of the sun into usable energy for generation of their cells) (they; convert; the energy of the sun; into usable energy; L:a process called photosynthesis)
They they
undergo convert
a process called photosynthesis , where they convert the energy of the sun into usable energy for generation of their cells
the energy of the sun into usable energy L:a process called photosynthesis