Tungkol sa konsepto at salik na nakakaapekto sa demand buuin ang isang concept map at ang repleksyon nito tulad ng nasa baba

Air pollution: “combustion results in gases such as nitrogen oxides, nitrogen dioxide and particulates. the main causes of air pollution include transport, domestic combustion and industrial processes. pollutants from these sources can cause problems in the immediate vicinity and a distance away.”

Answera discharge of static electricity;

Benjamin franklin and john adams