The families in developing countries are frequently larger, just less resource (for example. the people use more some resources per human) than those in more developed countries. Still, more and more human populations wish to have a 'western' standard of life. The growth in the world's common standard of living importantly lowers the potential human carrying capability of the world. Hence, so to reduce their impact as a species, people must not only reduce the resources they use per individual and they must as well reduce their average size of the family.
Though human populations are frequently considered on a scale of global, components that affect growth of population vary in different parts of the globe. Hence, it's necessary to understand the various forces acting on people throughout the globe.
Few of the factors influencing size of the family and hence the population growth are economic one of it and these factors are probably the most easily interpreted. For example, the rural agricultural family in a developing nation that relies upon a handle pulled by a water buffalo wants many family members to take care of the crops marketing, harvesting and planting. The family of 3 wouldn't provide adequate labor to sustain the family business concern.
Then, the families in developed countries incline to be small for economic causes. It's expensive to raise babies at the comparatively high standard of life found in such nations. Significant resources must be paid to nutrient, dresses, transportation system, entertainment and educating. The large proportion of babies from developed nations attends college, so adding even more to the expense (spending). Thus, it's economically sensible in such countries for families to have few babies.
On Earth, the cultural factors influence size of the family and as an outcome, it affect rate of population growth. By a cultural point of view, the religion can have a profound effect on birth control. Some religions advance large families as a technique to further the religion or to glorify a higher ability. E.g., Jewish Orthodoxy encourages large families in order to perpetuate Jewish religion. Romanism promotes large families for the same cause and prevents the practice of any 'man-made' means of family planning. Religious followers of a religion with such values frequently have large families even in the face of different components, such as economic one of it and this can be seen in nations like Judaism (Israel) and Catholicism (Brazil), which have high percents of religious followers in their populations. Some countries have high rates of birth and high population rates of growth.