What are some of the consequences and concerns of population growth?

The rapid population growth has created major concerns for the living communities as well as our environment. There is a huge economic burden in many countries which once were stable but now due to over population, there is a lot of instability in different facets of lives. No jobs are available easily, the competition is increasing day by day, public facilities and public schools are also suffering. The concept of sustainable development will so will be a dream for the earth people.