What is the result of over population?

I think that when looking at Overpopulation you have to look at all aspects. Including countries with higher birth rates to death rates and how they are handling the growth. Even in impoverished nations there is still food going around. I mean we are talking about poor countries that are still able to feed their people. Although yes there are parts in Africa that are getting hit hard by these affects.

The affect is more on the environment and ecosystem and that does not really matter what the population is, as long as the people are responsible.

There is much speculation as to whether the earth can actually sustain this population boom of humans, but one thing is for sure all the wrong countries are experiencing the over population growth.