Pollution is the main harmful to the environment which we are living now. Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Growing evidence of local and global pollution and an increasingly informed public over time have given rise to environmentalism and the environmental movement, which generally seek to limit human impact on the environment. The main effects of the pollution is the Sulphur dioxide and nitrogen oxides can cause acid rain which lowers the pH value of soil so the Soil can become infertile and unsuitable for plants. This will affect other organisms in the food web and also effect to the human beings. The emission of greenhouse gases leads to global warming which affects ecosystems in many ways. In the hierarchy of controls, pollution prevention and waste minimization are more desirable than pollution control. Recent studies have investigated the potential for long-term rising levels of atmospheric carbon dioxide to cause slight but critical increases in the acidity of ocean waters, and the possible effects of this on marine ecosystems.
