1) Realizar el siguiente verdadero o falso. Justificar los ítems falsos. a) La hidrósfera es la capa exterior sólida que recubre todo el planeta.

b) Hace millones de años, las masas terrestres del planeta estaban unidas en un súper continente, Pangea.

c) Solo existen relieves en los continentes.

d) Los lugares donde las placas se separan se denomina zona de transformación.

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .