Answer:
Biodiversity conservation
Step-by-step explanation:
Biodiversity conservation means the protection of different species of organisms present around the world due to their potentials to be a source of drug, food, industrial materials or other important human use.
Several important species that could have been a source of food or other important materials have gone extinct either naturally or due to direct/indirect human actions.
Assuming rosy periwinkle has gone extinct, there is no way its extract would have been discovered to be a good treatment for cancer.
Hence, biodiversity conservation or preservation are efforts put in place to preserve organisms that will serve as our future heritage.