Whose population is growing?

Today the world’s population is more than seven billion. Social thinkers around the world are also expressing their deep concern over this growing population. The dangers of population explosion are being discussed widely. All the countries are talking about curbing the growing population and the limited natural resources are being cited. Indeed, the earth’s size is not going to increase and the natural resources present here are also not going to grow, such as water, cultivable land, etc. For this reason, social scientists are warning that the increasing population is the biggest threat to the survival of humans. In such a situation, the question arises that how much human population can the earth bear? And, if all the population is exploding than which group or community dominates in making contribution to the growing world population?