The Laurier Media Collection is available only for University classroom usage. Titles are not available for sale or rental. Geography Zoologist Bob Paine conducts an experiment to determine the relationship between starfish and other marine life. His wok has enabled him to define the principle called keystone species. The population of a certain species affects entire ecosystems.
Humans impact the biodiversity of the world more than any other.
We are the greatest keystone species. Thus, we have a larger responsibility to the world around us.