Pollution is one of the main problem that is related to the human activity.As the increase in the technology made by human ,the level of pollution also increase as technology is one of the main cause of pollution.technology will enhance for a better life for human but on the other side it will cause many disaster on earth.The easy example is vehicle,almost all of the people now used a vehicle to do their work,there are a million vehicle used out there.Carbon monoxide,sulphur dioxide,nitrogen oxide produced by this motor vehicle is one of the main cause of pollution,expecially air pollution.It lead to many problem that is ignored by human although they know the bad side of this technology.The release of this dangered gases will cause lung disease,asthma,immune disease,cancer and the other problem.It calso can kill the microorganism on earth surface .
     The other technology that are commonly used by human is air conditioner and also refrigerator that also produce  a dangered gases and release it to the environment .The gases released will lead to the thinner of the ozone layer and then will cause the global warming.When the temperature of the earth increase ,some the microorganins on the earth surface will died as they cant affort the change in temperature.The global warming also will cause the sea level to increase and then it will lead to the disaster such as tsunami.This is happen when the global warming had cause the ice block at the south and north to be melt.The release of the dangered gases also will produce an acid rain ,the acid rain will corrodes the building and increase the acidity of the soil and water.Thus the plant ,aquatic animal and small animal on earth surface will died.Then human will loses the source for live such as food that is mostly obtain from the plant and animal.The pollution problem cant be stop as it had became to late but it still can be reduce to ensure the future can  be save.