They can only estimate because- 1) they can't estimate how fast they can brood 2) they don't know if their predators will reproduce fast 3) they don't know if people will stop killing and destroying habitats 4) They don't know where all the species are, they might have escaped into other places fit for them to live
They can only estimate because- 1) they can't estimate how fast they can brood 2) they don't know if their predators will reproduce fast 3) they don't know if people will stop killing and destroying habitats 4) They don't know where all the species are, they might have escaped into other places fit for them to live
