All of the following are threats to biodiversity except
a. invasive species.
b. habitat fragmentation.
c. species preservation.
d. biological magnification of toxic compounds.

All of the following are threats to biodiversity except species preservation. Biodiversity refers to the different variety of life that inhabit an ecosystem. Species preservation is the act or process of preserving organisms that live in an ecosystem. In a way it is preventing the further destruction or decay of a particular species that are dwindling in numbers. Human activities (e.g. hunting, habitat destruction) are the biggest threat to biodiversity, but the irony of it all is that humans are also responsible for the protection and preservation of these species.  

The Correct answer is C

Species preservation.

Explanation:

Species preservation means long term preservation of organisms either animals or plants in the best possible condition.So they can use it for future reference for scientific researches.Species preservation allows the regulation of how human activities are affecting the growth of species of organisms.Species preservation helps us to preserve those organism species which are essential for our ecosystem.