The two charts show that the increase in the US population has been accompanied by a corresponding decline in the number of wildlife species. Far too many species have been lost already. This poses a danger to ecological balance. As the human population expands, more and more wild animals are hunted for food or because they are thought to present a threat to man. But studies show shat one of the primary causes of the disappearance of wildlife is pollution, which is one the consequences of the population growth and economic development. This makes us wonder if man is able to share this planet in harmony with other life forms. in my opinion, it is imperative to take steps to reverse the disturbing trend illustrated in the chars. One measure would be to forbid the building of cities in areas .
