Darwin s theory tells us that the survival of each organism is determined by that organism s ability to adapt to its environment.
(Darwin s theory; tells; us; that the survival of each organism is determined by that organism s ability) Context(Darwin s theory tells,List([0, 21))):(the survival of each organism; is determined; by that organism s ability)
Darwin s theory tells,List([0, 21))
Darwin s theory the survival of each organism
tells is determined
us that the survival of each organism is determined by that organism s ability
by that organism s ability