SPECIES

21 species have been declared extinct, the U.S. Fish and Wildlife Service says : NPR

Curious Kids: what is a species?

Species Definition and Examples - Biology Online Dictionary

UN Report: Nature's Dangerous Decline 'Unprecedented'; Species Extinction Rates 'Accelerating' - United Nations Sustainable Development

Toughness has limits: over 1,100 species live in Antarctica – but they're at risk from human activity

Name a New Species Scripps Institution of Oceanography

What Makes a Species a Species?

Species Definition: Lesson for Kids - Video & Lesson Transcript

Invasive Species

Species

What is a species?

Discover 10 Invasive Species in Ohio - A-Z Animals