19 ¿Cuál de las siguientes representa una reacción química sencilla?
(1 Point)
al separar el agua de la arena mediante un embudo
al preparar caramelo a partir de azúcar y agua
cuando mezclamos vinagre con agua en un vaso de precipitado
cuando evaporamos el agua en una mezcla de agua salada
20​

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later

Which of the following did you identify correctly