1. In undisturbed tropical rain forests, for instance, nearly 100% of leaves and detritus are decomposed and recycled within a few after they fall to the forest floor.
2. Plants and photosynthetic microorganisms convert light into chemical energy by the process of photosynthesis, which creates glucose (a simple sugar) and free oxygen.
3. For example, exposure to inorganic arsenic is common among people who in copper smelters or live around them.
4. Asbestos fibres, for example, are small needle-shaped silicate crystals that deep into lung tissue and evoke reactions.
5. Other interspecific relations include parasitism, infectious disease and competition for limited resources, which can occur when two species the same ecological niche.
6. The environment also involves the relationships of the environment, such as the social, cultural and economic environment with the bio-physical environment.
7. Today, many of the key pollutants in the urban atmospheres are secondary pollutants, produced by processes initiated photochemical reactions.
8. A wide variety of solutions can be used in this process as agents.
9. Aerobic and anaerobic microorganisms help to down the biodegradable substances in the landfill and produce carbon dioxide and methane gas which is typically venter to the surface.
10. Existing and future targets can be achieved by embracing the concept of sustainable development - development today that not compromise the development needs of future generations.