What is the consequence when the demand from environment exceeds its "Carrying capacity"?

All of the above

The environment is able to perform all its functions without any interruption as long as the demand is within its carrying capacity. This implies that the resource extraction is not above the rate of regeneration of the resource and the wastes generated are within the assimilating capacity of the environment. When this is not so, the environment fails to perform its third and vital function of life sustenance and this results in an environmental crisis.