According to one leading environmental expert, Lovejoy assumes that the actual species extinction rate is at least one thousand times greater than the observed extinction rate.
(Lovejoy; assumes; that the actual species extinction rate is at least one thousand times greater than the observed extinction rate) Context(Lovejoy assumes,List([47, 62))):(the actual species extinction rate; is; at least one thousand times greater than the observed extinction rate)
Lovejoy assumes,List([47, 62))
Lovejoy the actual species extinction rate
assumes is
that the actual species extinction rate is at least one thousand times greater than the observed extinction rate
at least one thousand times greater than the observed extinction rate