What is simultaenous equation

Psychologists studying infant memory want to determine at what age babies can remember specific events. an experimenter uses several puppets to demonstrate a series of actions while the infant watches. after a delay, the experimenter records how many of the actions the child imitates when playing with the puppets. what is the dependent variable?

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?

Why do scholars believe that atlantis was a ficitonal place created by plato