Pollution occurs when pollutants contaminate the natural surroundings, which brings about changes that affect our normal lifestyles adversely. Pollutants are the key elements or components of pollution which are generally waste materials of different forms. Pollution disturbs our ecosystem and the balance in the environment. With modernization and development in our lives pollution has reached its peak, giving rise to global warming and human illness.
domingo, 2 de julio de 2017
The Mesozoic Era
Welcome back!The following links will help you complete the task.
http://kids.britannica.com/comptons/article-273833/Earth
http://www.historyforkids.org/scienceforkids/geology/eras/triassic.htm
http://www.historyforkids.org/scienceforkids/geology/eras/jurassic.htm
http://www.historyforkids.org/scienceforkids/geology/eras/cretaceous.htm
Remember to use a dictionary in case you don't know the meaning of the words.
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