This means that the greater number and variety of individuals that exist for a given species, the more the species will be able to survive and adapt in a constantly changing environment.
(This; means; that the greater number and variety of individuals that exist for a given species, the more the species will be able to survive and adapt in a constantly changing environment) (the species; to adapt; L:in a constantly changing environment) (individuals; exist; for a given species) (the species; to survive; )
This the species individuals the species
means to adapt exist to survive
that the greater number and variety of individuals that exist for a given species, the more the species will be able to survive and adapt in a constantly changing environment
L:in a constantly changing environment
for a given species