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Ligh pollution canbe caused by advertising sings, stadium and city lighting, and other artificial lighthing (like the light caused by night traffic). Artificial lighting has health health effects on humans and animals.In people, it can cause high blood pressure and effect sleeping and waking rhythms and immunity. It might be a factor in some cancers, such as breast cancer. In animals, it can affect sleeping andwaking rhythms; navigation, and reproduction.
In addition, greenhouse gases have caused a warming effect on the earth’s climate. The greenhouse gases are water vapor, carbon dioxide, methane, andozone. They are naturally – occurring gases in the atmosphere, but human activity has increased their concentration in the atmosphere. For example, the levels of carbon dioxide (Co2) in the atmospherehave risen due to the burning of fossil fuels. The effect is a rise in global temperatures. The higher temperatures cause the melting of glaciers, a risc in the water level of oceans, and thedisruption of land and marine life, including that of humans. Although carbon dioxide is necessary for plants to survive, it is also considered to be a kind of pollution because high levels of carbon dioxidehave for plants to survive, it is also considered to be a kind of pollution because high levels of carbon dioside have caused the oceans ti become more acidic.
it is not possible for anyone topredict the exact timing and effects of global pollution and global climate change brought about by pollution. There is general agreement by scientists tht the global climate will continue to change,...
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