。 control the population growth。 we can make this world in which to live。 by protecting nature, we protect ourselves。 species and biological munities have difficulty adapting to change。 and this plan has a great effect on the world population。 for most of the developing countries, it is a good idea to control the population growth。 a baby born in the united states will use in his lifetime 30 times more of the worlds resources than a baby born in india。 the whole world faces the problem that raw materials are being used up at an increasing rate and food production can not keep up with the population increase。