Amal+summry+(c)

Recent research has shown that life expect in some countries people are living longer and this due to a number of causes and effects. To beginning with the causes ,the countries have medical facilities to make better life for them .This facilities have been helped by technology and  access to clean water ,they bring from sea or river. Also, they have been in safe environment with high quality living. In addition ,there are also some effects as increase the number of population such as, many people have come to Australia to study or work or live this due to rising the population. A s result, they have been a long time in same country that older population. 