What is the developmental theory?
Developmental stage theories are theories that divide child development into distinct stages which are characterized by qualitative differences in behaviour. There are a number of different views about the way in which psychological and physical development proceed throughout the life span.
What are the types of cell respiration?
There are two types of cell respiration: aerobic cell respiration, a reaction with the participation of molecular oxygen (O₂); and anaerobic cell respiration, without the participation of molecular oxygen and which uses other inorganic molecules as an oxidant instead. There are several varieties of anaerobic cell respiration. The main one is fermentation.
What are the roots of the equation x^3 - 9x^2 + 31x - 39 = 0?
After factoring and doing long division, the roots turn out to be x=3, x=3+2i, x+3-2i.