Answer:
D) mixed market economy.
Explanation:
The South African economy can be most accurately be described as a mixed market economy. South Africa is a technologically advanced market economy. It has one of the strongest economies in Africa. They produced textiles, chemicals, iron and fertilizer.
Cell-tissue-organ-organ system
Lactic acid is produced when the supply of oxygen is inadequate.
no beacuse they are differnt parts of the human with different functions
