Pollution and its Negative Effects

       Pollution is the degradation of natural environment by external substances introduced directly or indirectly. Human health, ecosystem quality and aquatic and terrestrial biodiversity may be affected and altered permanently by pollution. Pollution occurs when ecosystems can not get rid of substances introduced into the environment. The critical threshold of its ability to naturally eliminate substances is compromized and the balance of the ecosystem is broken.

       The sources of pollution are numerous. The identification of these different pollutants and their effects on ecosystems is complex. They can come from natural disasters or the result of human activity, such as oil spills, chemical spills, nuclear accidents ... These can have terrible consequences on people and the planet where they live: destruction of the biodiversty, increased mortality of the human and animal species, destruction of natural habitat, damage caused to the quality of soil, water and air ...

      Preventing pollution and protecting the environment necessitate the application of the principles of sustainable development. we have to consider to satisfy the needs of today without compromizing the ability of future generations to meet their needs. This means that we should remedy existing pollution, but also anticipate and prevent future pollution sources in order to protect the environment and public health. Any environmental damage must be punishable by law, and polluters should pay compensation for the damage caused to the environment.

Comprehension

1. The damage caused by pollution might be irreversible:
   a. True
   b. False
   
2. The ecosystem
   a. can always cope with pollutants
   b. may not always be able to cope with pollution.
   
3. Pollution
   a. is always caused by humans.
   b. may sometimes be caused by natural disasters.
   
4. An ideal solution to prevent pollution would be to
   a. refrain the development of some counries.
   b. continue develpmental projects.
   c . take into consideration the future generations need to live in a healthy environment.