In the following questions, some of the words have been left out. Read the passage carefully and select the answer from the given blank out of four alternatives.

The environment is the natural surroundings of the earth that ___(1)____ an organism’s survival. The French word ‘environ’ that means to surround is a derivative of the word environment. It ___(2)____ of living-beings such as humans, plants, and animals. The air, water, and land are the non-living entities. Their functioning is designed by nature in such a way that everything is dependent ___(3)____ each other. The human being is the most ___(4)____ creature of all beings who can depend on all the natural resources of the earth. He requires the air to breathe. Not only humans but plants and animals also need air to breathe. There will be no life on earth without air. It is only the human being who is ___(5)____ for the destruction of the environment.