To be pregnant, an equilibrium in ph and chemical contents of the uterus and the outside environment has to be maintained, to prevent any reactions of the chemical sustances taken in by the person pregnant and the baby *has something to do with concentration gradient, hence yes, pregnancy can count as homeostasis
The primary function of the respiratory system is to supply blood with oxygen
B) sunlight
Sunlight supports life by providing food and warmth which is needed for the population of practically anything on earth to survive
Easy just get some water and get a cup and pow
