Choose the word (a, b, c or d) that best fits each of the blank spaces

Environmental pollution is a term that (1) ____ to all the ways by which man pollutes his surroundings. Man dirties the air with gases and smoke, (2) ____ the water with chemicals and other substances, and damages the soil with too many fertilizers and (3) ___. Man also pollutes his surroundings (4) ____ various other ways. (5) _______, people ruin natural beauty by (6) ___ junk and litter on the land and in the water. They operate machines and motor vehicles that fill the air with (7) ___ noise.

Environmental pollution is one of the most serious problems facing humankind today. Air, water, and soil are necessary to the survival of all living things. Badly polluted air can cause illness, and (8) _______ death. Polluted water kills fish and other marine life. Pollution of soil reduces the (9) ____ of land that is available for growing food. (10) _______ pollution also brings ugliness to man’s natural beautiful world.

(1) _______

• A. 
  refers
• B. 
  shows
• C. 
  tells
• D. 
  speaks