Certain species are very sensitive to disturbances to their environment, and therefore can be used as an early warning sign for environmental degradation that might not otherwise be noted. What are these species called?

A) keystone species
B) invasive species
C) indicator species
D) pioneer species
E) endemic species

Indicator Species

Organisms used to assess the health of an ecosystem because their presence, absence, or abundance reflects a specific environmental condition.

Environmental Degradation

The deterioration of the environment through depletion of resources, destruction of ecosystems, and the extinction of wildlife.

Sensitive

Capable of detecting or responding to slight changes, signals, or influences.