11. under what conditions can spontaneous recovery occur?
a) as a result of latent learning
b) when the conditioned stimulus starts again
c) after systematic desensitization
d) when the unconditioned stimulus is extinguished

D: When the unconditioned stimulus is extinguished

Explanation:

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

allowed for the prediction of the properties of missing elements.