The second part was a biological agent that would promote the growth of plant and animal life to dangerous levels and they would die off leaving the planet barren.
(The second part; was; a biological agent that would promote the growth of plant and animal life to dangerous levels and they would die off leaving the planet barren) (a biological agent; would promote; the growth of plant and animal life to dangerous levels) (they; would die off; ) (they; leaving; the planet; barren)
The second part a biological agent they they
was would promote would die off leaving
a biological agent that would promote the growth of plant and animal life to dangerous levels and they would die off leaving the planet barren
the growth of plant and animal life to dangerous levels
the planet barren