endangerment

noun 0.656

invasive species

noun 0.636

keystone species

noun 0.626

extinction event

noun 0.606

species name

noun 0.593

extinction

noun 0.579

subspecies

noun 0.575

specie

noun 0.575

mass extinction

noun 0.574

wild animal

noun 0.566

wildlife

noun 0.555

biodiversity

noun 0.539

sea turtle

noun 0.537

wild life

noun 0.531

endemic

noun 0.526

exotic

noun 0.521

animal

noun 0.519

bald eagle

noun 0.516

living fossil

noun 0.516

amphibian

noun 0.515

rara avis

noun 0.512

speciation

noun 0.510

dinosaur

noun 0.510

nature reserve

noun 0.509

scientific name

noun 0.503

predation

noun 0.502

desert tortoise

noun 0.502

red panda

noun 0.501

reptile

noun 0.501

elephant

noun 0.500