Question -
Answer -
Since the start of civilisation and till the rise of industrialisation, the rate at which natural resources were extracted were far less than their rate of regeneration. That means demand fell short of the supply of the resources. That time nature exploitation was within limits. But, coming to present day scenario, the population has seen great surge and there has also been rapid progress in industries which means the rate of extracting natural resources is higher than the rate of regeneration therefore, the demand was far more than the supply. This created ecological imbalance and brought about crisis which can be referred to as the supply demand reversal of environmental resources.