Answer: Bipolar disorder (Maniac-Depressive disorder)
Explanation: Bipolar disorder is a mood disorder that causes the person to experience the two sides of the emotional spectrum (being depression and mania). Bipolar patients are extremely fragile and any stressor can potentialy change their mood.
They have depressed periods where they feel inferior, worthless and don't want to do anything but they also have mania periods where they feel extremely agitated, happy and sometimes delusional.
When the denominators are same simply add the numerator and u get the answer 8 by 7
La disminución de la población mayormente va ser por el desarrollo de la educación de las niñas y del acceso al control de la natalidad que va hacer caer el índice de fecundidad y también porque las personas están envejeciendo y para finales del siglo la población disminuirá