The first to go would have been the photosynthetic plants that depended on sunlight to survive.
(The first; to go; ) (The first to go; would have been; the photosynthetic plants that depended on sunlight) (the photosynthetic plants; depended; on sunlight; to survive) Context(the photosynthetic plants depended,List([32, 71))):(the photosynthetic plants; depended on sunlight to survive; )
the photosynthetic plants depended,List([32, 71))
The first The first to go the photosynthetic plants the photosynthetic plants
to go would have been depended depended on sunlight to survive
the photosynthetic plants that depended on sunlight
on sunlight to survive