When lakes are used for aquaculture, excess fish food pollutes the water as complete use of the food cannot be achieved (Photo 21). Nitrogen and phosphorus present in the excess food is dissolved or suspended in the water.
According to Statistics South Africa's Census 2011 data, in 2011 the country's population was 51 770 560, of which 26 581 769 (51.3%) were female and 25 188 791 (48.7%) were male. Africans are in the majority at just over 41-million, making up 79.2% of the total population.The coloured population is 4 615 401 (8.9%), while there are 4 586 838 (8.9%) whites. The Indian/Asian population stands at 1 286 930 (2.5%).auteng, South Africa's economic powerhouse, is the most populous of the country's provinces, although it is by far the smallest geographically. Some 12.3-million people live in the province, or 23.7% of the total.
South Africa population 2017. During 2017 South Africa population is projected to increased by 598,966 people and reach 56,007,479 in the beginning of 2018. The natural increase is expected to be positive, as the number of births will exceed the number of deaths by 473,743.