The gradual change and buildup of organisms in an environment

The gradual change and buildup of organisms in an environment is called ‘the ecological development’.

Ecological development or Ecological Systems Theory where the organisms living in the present is responsible and obligated to check and assure everything related to environment for the sake of the future generation’s inheritance. There must be expected sacrifices to fully achieve the conservation of the diversified environment.

The answer is a. i hope this

Because people are wasting it