The earth's life was initially anaerobic before plants with chloroplasts began to produce oxygen in large quantities that can Kill an ordinary cell.
(The earth's life; was; initially anaerobic; T:before plants with chloroplasts began to produce oxygen in large quantities) (plants with chloroplasts; began; ) (plants with chloroplasts; to produce; oxygen) (large quantities; can Kill; an ordinary cell)
The earth's life plants with chloroplasts plants with chloroplasts large quantities
was began to produce can Kill
initially anaerobic T:before plants with chloroplasts began to produce oxygen in large quantities
oxygen
an ordinary cell