Biologists Think There Are Four Major Reasons Why We Should

Multiple Choice

Biologists think there are four major reasons why we should work to prevent human activities from causing the extinction of other species. Which of the following is not one of these reasons?

A) species are part of earth's life support system
B) most species contribute to services that support our economies
C) it will take from 5 million to 10 million years to rebuild the biodiversity
D) we need animals, especially rare animals, for zoos
E) each species has a right to exist even if it isn't useful to us