The extinction vortex represents the idea that even if an organism is extant, it may have a gene pool that will not support its long-term survival. A. TrueB. False

True.

Explanation:

Extinction vortex is a model used by scientists to understand extinction dynamics within a community. This model allows scientists to assess and understand how a population can become highly vulnerable to elements of its habitat, becoming increasingly apt for extinction. According to this model, any organism is capable of extinction, as all are susceptible to having a gene pool that will not allow its survival, regardless of the environment.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

b brown mice / white sand dunes