Endangered

The video tutorial discusses the concept of extinction, highlighting how its definition can vary but is generally assessed by observing changes in population size. It also introduces the International Union for Conservation of Nature (IUCN), which compiles a Red List of species at risk, categorizing them as vulnerable, endangered, or critically endangered.

How does the definition of extinction vary according to different sources?

What methods are used to evaluate changes in population size of species?

Discuss the importance of monitoring population size in the context of conservation efforts.

What is the role of the International Union for Conservation of Nature (IUCN) in monitoring species?

What criteria does the IUCN use to categorize species as vulnerable, endangered, or critically endangered?