An electric current is generated when copper wire & zinc rod are dipped inside a lemon after connecting them with an electric lamp because the chemical energy stored in the lemon is converted into...
Bad effects of chemical pesticides The chemical pesticides cause the chemical pollution for the soil, the water & the air, they cause serious health risks such as cancer, the nervous system diseases and the reproductive...
The soil pollution The pollution is very dangerous, There are different kinds of pollution as air pollution, the water pollution & the soil pollution, The pollution is any change in the environment that disturbs...
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