The document defines key terms related to pollution, energy, and the environment. It includes definitions for smog, acid rain, pollutant, nuclear, explosion, carbon dioxide, fuel, freshwater, refrigerant, propellant, rain forest, gas, atmosphere, oil spill, waste, dump, sewage, litter, food poisoning, and toxic waste. The definitions provide concise explanations of each term and their relationships to environmental issues.

1. English dictionary

2. F. ANCIZAR PEÑA YISEL PATIÑO T.

3. SMOG Adjective, a mixture of fog and smoke or other air borne pollutants such as exhaust fumes.

4. ACID RAIN Rain that contains dilute acid derived from burning fossil fuels and that is potentially harmful to the environment.

5. POLLUTANT A substance that pollutes something e, g. a chemical or waste product contaminating the air, soil, or water.

6. NUCLEAR Relating to, using, or producing nuclear energy through fission or fusion.

7. EXPLOSION The sudden loud release of energy and a rapidly expanding volume of gas that occurs when a bomb detonates or gas explodes.

8. CARBON DIOXIDE A heavy colorless odorless atmospheric gas. Source= respiration, combustion. Use= during photosynthesis, in refrigeration, carbonated drinks, fire extinguishers. Formula= CO2.

9. FUEL Something that is burned to provide power or heat.

10. FRESHWATER Relating to, consisting of, or living in fresh water.

11. REFRIGERANT A substance used to cool or freeze something, specially the liquid that circulates in a refrigerator.

12. PROPELLANT A substance that is burned to give upward thrust to a rocket. A compressed inert gas used to dispense the contents of an aerosol container when pressure is applied and released.

13. RAIN FOREST A thick evergreen tropical forest found in areas of heavy rainfall and containing trees with brood leaves that form a continuous canopy.

14. GAS A substance that is neither a solid nor a liquid at ordinary temperatures and has the ability to expand infinitely e, g, air.

15. ATMOSPHERE The mixture of gases that surrounds an astronomical object such as the earth.

16. OIL SPILL Oil that has accidentally or intentionally run out of its container.

17. WASTE Useless or discarded material such as garbage or sewage.

18. DUMP U. to throw away (garbage) in careless manner or in a special place for it.

19. SEWAGE n. waste carried off by pipes.

20. LITTER n. bits of waste paper, containers, etc. that people have thrown away.

21. FOOD POISONING n. the sickness resulting from eating contaminated food.

22. TOXIC WASTE The emission to the environment of these substances pose a serious risk to life. Every newborn now has in its body contaminants in the environment by human activity.

23. THANKS