Discussing Cause - 1 - revised

This area has a huge increase in population over the past one hundred and fifty years. According to the following reasons, we can know what causes the population increase. First of all, we advanced in medicine and health care, so people’s life spans are longer and longer. Another reason is that we improve farming methods that produce more and better food. Thus, we don’t have to worry about hunger. Most importantly, there are fewer infant deaths and more people living longer. This reason results in that fertility is more than mortality. After I bring these reasons, we can know why the population of this area increases rapidly.