<P> The correlation does not imply cause and effect, and can be linked to the interplay of birth rates, death rates and economic development . </P> <P> Poor living conditions can also cause a very bad effect on the population; diseases such as malaria and HIV / AIDS can also contribute to this . Lack of nutrients, poor sanitation and poor health institutions . Death rate and birth rate can also have a negative effect on the population . </P> <Table> <Tr> <Td> "</Td> <Td> You know, when we first set up WWF, our objective was to save endangered species from extinction . But we have failed completely; we haven't managed to save a single one . If only we had put all that money into condoms, we might have done some good . Sir Peter Scott, Founder of the World Wide Fund for Nature . </Td> <Td>" </Td> </Tr> </Table> <Tr> <Td> "</Td> <Td> You know, when we first set up WWF, our objective was to save endangered species from extinction . But we have failed completely; we haven't managed to save a single one . If only we had put all that money into condoms, we might have done some good . Sir Peter Scott, Founder of the World Wide Fund for Nature . </Td> <Td>" </Td> </Tr>

When did the most explosive growth in the history of global human population take place